1, lithium-ion laptop battery nominal voltage 3.7V (3.6V), charging cut-off voltage 4.2V (4.1V, the batteries under the brands have different designs). (Li-ion batteries is the norm: lithium ion secondary battery)

2, to the requirements of lithium-ion rechargeable battery (GB/T18287 2000 norms): First of all, constant current charge, that is, a certain current, and battery charging voltage as the process of gradually increased, when the battery terminal voltage to reach 4.2V (4.1V), To charge for the current charging voltage, that is, a certain voltage, current batteries based on the degree of saturation, with the charging process to continue to gradually reduce, when reduced to 0.01C, that the termination charge. (C batteries based on current nominal capacity of a control method that, if the battery is a 1000mAh capacity, 1C charge current is 1000mA, attention mA is not mAh, 0.01C is 10mA.) Of course, that standard is 0.01 C5A, here I simplified.

3, Why is that the charge for the end of the 0.01C: This is a national standard GB/T18287-2000 provided as well as the discussions. Previously it was generally for an end to 20mA, the Ministry of Posts and Telecommunications YD/T998-1999 industry standards provided for in the same way, that is, no matter how much compaq battery capacity, to stop all current 20mA. GB 0.01C provided help to more full charge, through the identification of a party manufacturers benefit. In addition, the national standard provides for the charging time is not more than 8 hours, that is, even if not yet reached 0.01C, 8 hours, and that the end of the charge. (No problem, the quality of the batteries should be 8 hours to reach 0.01C, the poor quality of the battery, wait and meaningless)

4, what difference is the battery 4.1V or 4.2V: consumers do not have the distinction, depending on batteries manufacturer of the product specifications. Some brands of batteries are 4.1V and 4.2V common, such as A & TB (Toshiba), the domestic manufacturers is the basic 4.2V, but there are exceptions, such as Tianjin is the power of God 4.1V (but also by a 4.2V).

5, the rechargeable batteries of 4.1V to 4.2V happen: will increase the capacity of the Armada V300 battery, with a good feeling, and standby time, but will reduce battery life. For example, 500 of the original, down to 300. By the same token, to the 4.2V batteries have been sufficient, it will lower its short-lived. Lithium-ion batteries is very delicate.


6, since the battery inside a protective plate, we can rest assured that it had: No, because the board to protect the cut-off parameter is 4.35V (this is good, the bad to 4.4 to 4.5V), protection of the board is to meet in case If every time charge-off, the battery will decay quickly. 


7, much of the charge current is appropriate: In theory, the smaller of the more beneficial to the battery. But you can not order a battery charge, such as 3 days now. GB provides low-rate charge is 0.2C (standard arbitration charge), but also to the top of the Business Notebook nc6000 battery capacity of 1000mAh, for example, is 200mA, so we have this battery can be estimated more than 5 hours to full charge. (MAh = current capacity mA ¡Á time h)
£  £ 

national technical supervision departments to identify capacity lithium-based high-rate charge of 1C to 0.2C low discharge rate, time to calculate the value of capacity, the number of Test 5, 1st capacity to reach the end of the trial. (5 is the chance that if the first pass a test on the back of the 4th does not) allow for testing before the first cycle in advance, in order to 1C is the current charge that 4.2V to cease, and not behind the constant pressure to 0.01 C process, but not 14 hours.

8, lithium-ion batteries can withstand much of the charge current: factory tests can be very high, but the elevation ratio requirement for the country 1C, also above the cell, for example, more than 1 hour can be filled. Such a charge current, battery can bear it? For the current lithium-ion batteries, is the only Xiaoyi Si. There are no national standards for the Chargers, enforced by the Ministry of Posts and Telecommunications is the industry standard YD/T998 1999 / 2, which provides for the current charger not to be more than 1C.

9, and how life is provided for: to put it simply refers to the EVO N400c battery at 1C charge N after, 1C discharge, the capacity dropped to 70% at this time of the N is the life. Is not to say that 300 can also be used, the 301 can not be used. GB provides life shall be not less than 300. We usually do not detect the use of the conditions so harsh, life will be longer.

First of all, lithium batteries do not have time extraordinary charge to activate, you can not do, there have been charging circuit protection, the plug will be of no avail.

Second, the activation of the lithium laptop battery (charging curve is correct) for the first time in the general use, not to place a long time, or that the frequent charge that is used for some time, a method that is full charge and discharge, after the batteries that can be That is sufficient to use only in use for a long time before the need to re-re-re-charge and discharge fully corrected.

Finally, the lithium battery life mainly in charge and discharge cycles, the cycle is an absolute concept, for example, if you used the last 30% of the electricity, is full of electricity, in the future, they use 70% of the electricity, and full of electricity, the Is just a charge cycle, rather than two, so those who like to make use of rechargeable batteries of the players together, you own it in fact accelerated the end of battery life.

Some of the sources of misunderstanding:

Every time a rechargeable battery exhausted from the age-old from the NICD batteries, nickel-cadmium batteries that have memory effect, if clinging to make electricity, ibm battery with the use of the increase in the number of electricity and has shown less and less of the state .

Later, the NIMH battery, fact, has no clear memory effect, but still need to complete the charging and discharging to maintain its normal power consumption shows that this is some of Japan to provide nickel-metal hydride charger refresh function of the principle.

Lithium batteries and there was virtually no memory effect, of course, long after the use of charge or curve will be slightly inaccurate, Apple provides a simple ical prompt you from time to time for battery charging and discharging for correction, but do not have a high frequency.

On the activation of the lithium 92p1133 factory just need to use a number in order to achieve the best condition, this is true, but the use of more than a dozen hours of the activation is not necessary (and meaningless) is now charging circuits are taken into account User-friendly, full of batteries will automatically cut off the charging circuit, so that you can not sleep at ease, this time could not plug in the power of fact, there is no difference.

Turning to charge more than a dozen hours of habit or from the ancient NICD batteries, such as the slow start filling model, the original battery charging circuit design behind the general in order to maintain the normal temperature of the battery and battery to prevent damage, Use a small charge current slow manner, and this circuit under normal circumstances do not have the power to determine precise function, so users are recommended such a charge 14-16 hours to see, the error is generally in two or three hours If the charge flow is too large, too charge of the battery will cause serious harm.

Later, nimh for now and rechargeable lithium battery of fast circuit, has been a very good power detection, you can use the pulse-fast high-current charge, and also to maintain the battery in the normal temperature range, and to close Full capacity soon, in order to prevent the charge-off, the circuit from the high current pulse is converted to a gradual narrowing of the trickle charge, so that even if the full power detect some deviation, the more close to full power due to the smaller the current, at the last moment Charge current has been close to 0, no damage to the 40Y6799, which is why lithium batteries that 80% of the pre-charge 1 hour to complete, and full of the last 20% of the electricity it 4 hours.

Green curve for the battery charge curve, we can see that power (voltage) of the stage before the very rapid rise in the latter stages of a very gentle, corresponding to the charge current is that there is orange.

A similar understanding:

"As such, it is not, the battery is full, continue flying the power cord is no harm!"

This depends on many cases, by and large say definitely no problem with ah!

The book is in fact general with the battery used in the AC plug ah.

However, there is a special case for a period of time the battery will not have lost some of its own electricity, this is not matter whether you win or come packed in the same book, but when the power falls, it is necessary to determine whether the charging circuit for under normal use The electricity, in that it is necessary to charge again, imagine if the place is full of power and time again full, although users do not use the battery, but batteries are in the non-stop for a small amount of the charge and discharge, accumulated over the fact that Battery consumption in sufficient and effective release cycle, so good design will be a good circuit protection, once the end of the charge, the circuit will automatically cut off, since even if no long-term battery power led to the re-fall will not automatically start charging, unless You switch to using the 40Y6797 mode.

Therefore, the possibility has been flying AC depends on your ability to design, Apple's book, and so have such protection, even though be it with ease.

At present, the market used rechargeable batteries are nickel metal hydride (Ni-MH) and lithium-ion (Li-ion) are two types. Lithium-ion batteries have been in mass production of liquid lithium-ion battery (LiB) and lithium-ion polymer battery (LiP) two. Therefore, in many cases, the battery mark on the Li-ion and lithium-ion battery is a must. But that is not necessarily liquid lithium-ion battery, is also possible that the polymer lithium-ion laptop battery.

Lithium-ion battery is a lithium battery improved version of the product. Lithium batteries have a long time ago, but the lithium is a highly active (remember that the its position in the periodic table?) Of the metal, it is not safe when used often in charge when burning, the burst , Then there is the improved version of the lithium-ion batteries by adding the element lithium can inhibit the active ingredients (such as cobalt, manganese, etc.) so that the lithium power to achieve real security, efficient and convenient, and the old lithium batteries also Basically eliminated. As to how to distinguish them from the battery on the logo will be able to identify, lithium batteries for Li, lithium-ion battery for Li-ion. Now, notebook and mobile phone use of the so-called "lithium batteries", in fact, are lithium-ion toshiba battery.

The basic structure of modern batteries, including cathode, anode and electrolyte of the three elements. As a battery, lithium-ion battery with the same three elements. Lithium-ion technology in general or the use of inorganic colloidal liquid electrolyte, it needs to accommodate case solid combustible active ingredient, which increased the battery's weight and cost, but also limits the size and design flexibility. In general, liquid lithium-ion secondary PA2487UR is the minimum thickness of 6mm, and then to reduce the more difficult.

The so-called polymer lithium-ion batteries in three of the main structure at least one or more polymer materials used as the main battery system.

A new generation of polymer lithium-ion polymer batteries in the extent of the already very high, so the shape can be shaped and thin (the thinnest 0.5 mm), of any size and any shape, and greatly increased battery design flexibility , In order to meet product demand, made in any shape and capacity of the battery. At the same time, lithium-ion polymer PA3383U-1BRS unit of energy than current lithium-ion batteries in general increased by 50% of its capacity, charge and discharge characteristics, security, operating temperature range, cycle life and environmental performance in areas such as lithium-ion batteries are relatively large The rate increase.

Currently on the market by sales of liquid lithium-ion (LiB) in the over-charging the battery case, thus easily lead to the breakdown of the fire safety situation, it is very dangerous, so to install the necessary protection to ensure that the cell line IC will be no over - Charge. The polymer lithium-ion battery, this type of cell relatively liquid lithium-ion battery in terms of good-resistant properties of charge and discharge, so the protection of Canada's IC circuit requirements can be relaxed. Also in charge, the polymer lithium-ion batteries can be recharged using IC will be current with the lithium-ion rechargeable PA3107U-1BRS used in CCCV (Constant Currert-Constant Voltage) charge means the time required for comparison, can shorten the waiting time for many.

1, for a new battery charge
In the use of lithium batteries should be noted that for a period of time after the battery is placed into hibernation, lower than normal capacity at this time, the time has also come to shorten. However, lithium batteries can easily activated, as long as after 3-5 times the normal charge-discharge cycle of the laptop battery can be activated, the resumption of normal capacity. As the battery lithium own characteristics, its decision is almost no memory effect. Therefore, cell phone users in a new lithium battery in the activation process does not require special methods and equipment. Not only is the theory that, from my own practice, from the very beginning, the use of standard methods of charging that "activation" is the best way.
Lithium batteries for the "activation", a large number of claims: the time to charge more than 12 hours, repeated three times to do in order to activate the battery. "The first three necessary and sufficient to charge more than 12 hours", it is obvious from the nickel battery (such as nickel-cadmium and nickel metal hydride) inherited. This is why it can be said is the beginning of miscommunication. Lithium batteries and nickel battery charge and discharge characteristics of a very big difference, but also very clear to tell you that I have had access to all the serious official stressed that all technical information and charge-off will discharge lithium batteries, especially lithium liquid Ion battery causing great harm. According to the charge and therefore the best time and method of charging standards, in particular for not more than 12 hours of super-long charge. Typically, the statement introduced mobile phone charging method is suitable for the mobile phone standard method of charging.
In addition, the lithium battery in the phone or battery charger will automatically stop after a charge, there is no electricity nickel charger for 10 hours the so-called "trickle" charge. In other words, if your lithium batteries in full, on the white charger is also sufficient. And we can not guarantee that no one toshiba battery charge and discharge protection circuit features and never change the quality of safety, so your batteries will be in the long-term hovering on the brink of danger. This is also another charge against the chief reason.
In addition to certain mobile phones, the charge for more than a certain amount of time, if not remove the charger, this time not only to stop charging system, will be the beginning of discharge - charge cycle. This is perhaps the manufacturer has its own purpose, it is clear that on the phone and battery / charger is the life span of a negative. At the same time, long charging would take a long time, often at night, and to our country's power grid situation, at night in many parts of the relatively high voltage, but also volatile. Said earlier, the lithium battery is very delicate than nickel in the electric charge and discharge aspects of fluctuations in the capacity of resistance is much less, so this brings additional risk.
In addition, can not be ignored other aspects of a lithium battery that is not the same for over-discharge, over-discharge of lithium batteries is also very unfavorable. This leads to the following question.

2, in normal use when the charge should be
In our forums, often see this as the number of charging and discharging is limited, so should the cell phone battery power used up as much as possible and then charge. But I find on a lithium-ion battery charge and discharge cycle test table, on the life cycle of figures is as follows:
Life cycle:> 1000 cycle life:> 200
DOD is the depth of the discharge of which the initials. Can be seen from the table, the number of rechargeable and about the depth of discharge, 10% DOD at the time of the life cycle than 100% DOD's a lot longer. Of course, if the actual charge equivalent to the total capacity of the relative: 10% * 1000% * 100,100 = 200 = 200, which is the complete charge and discharge, or better than some, but in front of friends do say that some of the amendments: normal Under the circumstances, you should have a reservation in accordance with the remaining battery power and then run out of filling the principle of charging, but if your PA2487UR is expected in the first 2 days you can not adhere to the whole day, should start on time charge, of course, if you are willing to back A charger to the office and when Bielun.
And you need to charge in order to cope with the anticipated upcoming busy communications will lead to an important event, even if there are a lot of battery power over time, then you just charge ahead of time because you do not have a real loss "1" sub-charge cycle life , That is, "0.x" times, but often this will be a very small x.
The remaining battery power and then run out of charge to the principle does not mean that you go to the extreme. And charging the same length of a widespread view that "as far as possible the cell phone batteries run out of power, it is best to use automatic shutdown." This is only a matter of fact on nickel batteries, to avoid occurrence of memory effect, unfortunately, it is also spread of lithium batteries on this. It has been too low because the cell phone battery warning appears, do not continue to use the charge has been used in automatic shutdown of the case. The outcome of this case, the phone was in charge of the boot in and there was no response, had to give customer service overhaul. In fact, this is due to the battery as a result of excessive discharge and led to the low voltage that does not have the normal charge of the boot and conditions.
Lithium batteries for mobile phones boils down to the correct approach, I lithium batteries used in mobile phone charging and discharging of the most important tips are:
1, in accordance with the standards and procedures, charging time, even before the three to do so;
2, When the phone prompts when electricity is too low and should start charging as much as possible in a timely manner;
3, lithium PA3383U-1BRS do not need to activate the special method, in a normal cell phone use in lithium batteries would be natural to activate. If you insist on spreading the use of "three times before the 12-hour long activation charge" approach, in fact there will not be the effect.
As a result, all 12 hours long pursuit of the lithium batteries and rechargeable cell phone used in automatic shutdown, are wrong. If you are used to be in accordance with the wrong done, please correct in a timely manner, perhaps not too late.
Of course, cell phones and chargers to protect themselves and control the quality of a good circuit, for the protection of lithium batteries or have guaranteed. Therefore, understanding the rules of the charge is the key, in some cases also may make some concessions. For example, you found your cell phone the night before bed charge, you can also start charging before going to bed. The crux of the matter is that you should know what is the right thing to do PA3107U-1BRS, and not in accordance with the deliberately wrong to do.

The vast majority of phones are now used lithium batteries or lithium-polymer battery standby time greatly extended the life of the laptop battery time also increased. If the user wants to extend the effective use of battery time, the proper charging techniques are also essential, the following is the charging techniques:

The first stress: The battery factory have carried out active treatment, and pre-charging, the battery has more than electricity, a friend said battery charge in accordance with the adjustment period of time, the standby is still grossly inadequate. To assume that the battery is authentic battery, under such circumstances should be extended period of adjustment to conduct three to five full charge and discharge.

The second stress: Some automated intelligent rapid charger when the lights changed direction, said only 90 percent full. Charger will automatically change to slow recharging the battery is full. After the best use of the powerbook battery is full, otherwise it will shorten the time.

The third stress: rechargeable, lithium batteries do not need special discharge, improper discharge it will damage the battery. Charging as much as possible to slow Chong Chongdian to reduce filling fast; time not more than 24 hours. After three to five times the battery fully charge and discharge cycles of its internal chemical substances will be all "activate" the best use of effects.

The fourth stress: there are many users are often in charge of the cell phone when driving, in fact, this will very easily harm the life of the phone, because in the process of charging, cell phone circuit boards will be fever, at this time if there is external telephone M8511 battery, Could have an instant return to current, the internal components for mobile phones damage.

The fifth stress: Do not expose the battery in hot or cold, like the San Fu days, should not be placed on the car phone, and withstand the scorching sun exposure, or get air-conditioned rooms, blowing straight in the air-conditioned places. When charging, the battery a little heat is normal, but we can not let it Jinshou high temperature of the "torment." To avoid such a situation occurred, it is best at room temperature for charging, and not to cover anything on your mobile phone.

The sixth stress: the longer recharge time is not good, not to protect the circuit after a M6091charge should be stopped, otherwise batteries overheating due to heat or impact on performance.

Seventh stress: lithium-ion battery charger to be selected for, otherwise it will amount to less than saturation point, affect the performance of play. After the charge, should be avoided at the Chargers on more than 12 hours over a long time do not have to be separated so that batteries and cell phones.

Portable electronic products to the laptop battery as a power source. With the rapid development of portable products, increased consumption of all kinds of batteries, and developed many new battery. In addition to all of the more familiar high-performance alkaline batteries, rechargeable nickel-cadmium batteries, nickel-hydrogen batteries, but also in the development of lithium batteries. Here are introduced on the basic knowledge of lithium batteries. This includes the characteristics of the main parameters of the model significance, the scope of application and use of attention to matters.

Lithium is a metal element, its chemical symbol for Li (its English name lithium), is a silvery white, very soft, lively and chemical properties of metal, the metal is the lightest. Apart from the industrial application of atomic energy, can produce special alloys, special glass (on a TV screen using the glass) and lithium batteries. In lithium batteries used in its powerbook battery anode.

Lithium batteries are divided into two categories: non-rechargeable and rechargeable the two. Non-rechargeable battery called the one-time, it can only be in one-time chemical energy into electrical energy and power can not be reduced to chemical energy (or reduction of very poor). The rechargeable A1078 known as secondary batteries (also known as batteries). It will be chemical energy into electric energy storage, when in use, and then converting chemical energy into electric energy, it is irreversible, such as lithium batteries can power of the main features.

Lithium batteries is the biggest characteristic of high-specific energy. What is the specific energy is «than the energy refers to the unit weight or unit volume of energy. Than energy use Wh / kg or Wh / L to that. Wh is the unit of energy, W is watts, h is the hour; kg is kg (unit of weight), L is +11 (volume units). Here cite an example to illustrate: on the 5th nickel-cadmium battery is rated voltage of 1.2 V, its capacity of 800 mAh, while its energy to 0.96 Wh (1 ª± 2 V ¡Á 0 ª± 8 Ah). The same size on the 5th of lithium - manganese dioxide battery rated at 3 V, its capacity for the 1200 mAh, while its energy to 3.6 Wh. The two batteries are the same size, lithium - manganese dioxide battery than nickel-cadmium A1148 energy is 3.75 times!

One on the 5th nickel-cadmium batteries, weighing about 23 g, and one on the 5th of lithium - manganese dioxide battery, weighing about 18 g. A lithium - manganese dioxide battery for 3 V, and the two nickel-cadmium batteries only 2.4 V. So when the battery using lithium batteries small number (to reduce the size of portable electronic products, reduce the weight), and long battery life's work.

In addition lithium PowerBook G3 battery discharge voltage is stable, wide temperature range, low self-discharge rate, long shelf life, no memory effect and pollution-free advantages.
The shortcomings of lithium batteries is expensive, so is still not widely used, mainly used in handheld computer, PDA, communications equipment, cameras, satellites, missiles, torpedoes, and other equipment. With the development of technology, process improvement and production increase, the price of lithium batteries will continue to decline, the application will be more widespread.

Nickel-metal hydride batteries can be completely replaced by a one-time battery, especially when used for Gao Haodian equipment. We need not completely ignore basic nominal 1.5 V, a nominal 1.2 V rechargeable laptop battery the difference, since both balanced discharge voltage level is basically the same and alkaline batteries compared to the price of rechargeable batteries appear to be relatively high, But also to purchase an additional battery charger, naturally spend more, but rechargeable batteries can be recycled as many as 500-1000 times, so in the long run, rechargeable batteries cost-effective than alkaline batteries and environmental protection! Due to nickel-cadmium batteries containing hazardous substances - cadmium, nickel-hydrogen capacity than half of small, there are obvious memory effect, so as nickel-hydrogen battery production technology development, nickel-cadmium batteries have gradually been eliminated by

The primary use of rechargeable batteries: the purchase of new or prolonged storage is not used for the first several charge because of lack of pavilion battery, battery charging and discharging performance of non-normal reaction, so if the use of the smart charger, it is likely charger Unable to accurately judge the first few are likely to charge less it seems normal, but it is not smart charger encountered when normal cells the normal reaction, we need not worry, rechargeable battery-activated several times, filling Discharge will be back to normal. If this situation, you are the smart charger that does not understand the reaction, then I can only suggest you use ordinary non-smart slowly filling the category to maintain a battery or two (fully charged, and then use or discharge End End For a maintenance), after maintaining a two-for-use smart charger, should be able to see the smart charger a normal reaction.

Charge: Select charger, it is best to use those with the right to terminate charging devices (such as the Anti-time installation charge of negative voltage difference (- dV) cut off the charge and the prevention of overheating sensor devices) charger, so as not to charge the battery because of the shortened Life. In general, the standard charge (about four hours of -10 hours) than the ultra-fast charge (about ¡Ü 1 hour) to extend F2024A life.

  Discharge: the depth of discharge impact on battery life is the main factor, in general, the battery voltage discharge in the closing 0.8 to 1.0 volts (as discharge, the battery voltage will usually rebound within a few minutes to more than 1.1 V), are acceptable The scope. If the battery discharge at a high temperature, will shorten battery life. Battery charging time required ¡Ö battery capacity / x 120% charge current general charging time will be the basis for the charge current big - small increase 10 - 60 percent, to recharge during the preparation of the efficiency losses. Nickel-metal hydride batteries more appropriate charge current is 0.1 C-0.5C, more than 2 C or less than 0.1 C of the charge current may affect F2024B performance and shorten battery life.

  The battery charge or a discharge, will lead to reduced battery performance, poor performance. Nickel-metal hydride batteries: 1, not depth of discharge, is prohibited by the lamp or resistance to the battery to discharge completely electricity! 2, is prohibited on just the battery fully charged again forcibly charging 3, prolonged power shortage can not be saved, it should be kept charging, and suggested that the long-term use of batteries to charge every three months in order to avoid an electric short circuit, batteries and coins will not Or keychain and other metal items together on the same pocket, to make full use of F2299A storage box.

Or rechargeable batteries in the discharge period is certainly a fever, because there is no conversion efficiency of 100% of the charger or rechargeable batteries, certainly greater than the energy consumption of the actual battery storage of energy, the energy consumption of> up the chemical storage batteries Can. Ability to follow the conservation, more energy will not be a vacuum disappeared, but the discharge into heat, so that the battery is stored chemical energy into heat, if the fever is not, it can only show that the Pavilion DV1000 battery, nickel-hydrogen After the battery is full, not shelved, it will gradually lose energy, we called self-discharge.

In general, nickel-hydrogen batteries at room temperature for the self-discharge rate of about a month from 15 to 20 percent. To fully extended battery life, it should be: the battery stored in a cool, dry, well-ventilated places, avoid direct sunlight. To long-term storage, the environmental temperature should be below 30 degrees Celsius. Not in very high or extremely low temperatures and the use of charge. Save the higher the temperature, nickel-hydrogen battery, the easier it is the loss of capacity, that is, the greater the battery self-discharge without refrigeration, at room temperature only stored in a dry environment to use high-quality Charger, a necessary and sufficient to minimize the situation . With the right to use rechargeable monitoring the charger. Best regularly charge the Pavilion ZV5000 battery and discharge to prevent the battery voltage dropped to less than 0.8 volts. If the use of electronic equipment will not be a long time, to remove the battery or switch off the equipment. Do not different chemical structure, different brands, different capacities, different levels of charge, at different times to buy the used batteries.

Battery memory effect is reversible failure of the battery, battery failure can be re-back performance. Memory effect is long laptop battery cycle through specific work, automatically maintain this particular trend. The earliest definition of the nickel-cadmium batteries, nickel-cadmium batteries of the bag there is no memory effect, sintering batteries have memory effect. And now the nickel metal hydrogen (commonly known as the nickel-metal hydride) battery memory effect from this definition of restraint.

Modern nickel-cadmium battery technology improvement, the above-mentioned memory effect has been greatly reduced, while the replacement of a phenomenon of this definition, is the nickel-based batteries "lattice", usually, nickel-cadmium batteries by the two Effects of the combined effects, and nickel-hydrogen batteries only by the "lattice" memory effects, but also affected than nickel-cadmium batteries for small.

In practice, the memory effect of the method to eliminate the strict norms and an operational procedures, improper operation would be counter-productive.

For nickel-cadmium batteries, the normal maintenance of deep discharge on a regular basis: the average use per month (or 30 cycles) to conduct a deep-discharge (discharge to 1.0 V / per festival, foreigners call it exercise), is to maximize the use of ordinary light inspiron battery Shutdown or use such means can ease the formation of memory effect, but this is not exercise, because the equipment (such as cell phones) are not used 1.0 V / per session before the shutdown, must be specialized equipment or lines to complete this Of the work, but fortunately many nickel-hydrogen battery chargers are with this function.

For a long time not to exercise the nickel-cadmium batteries, because of the cumulative effect of memory, unable to exercise the capacity to respond, then you need a better discharge (foreigner said recondition), which is a long time with very little current on the battery Discharge to 0.4 V per session of a process that requires professional equipment.

The nickel-hydrogen batteries, exercise frequency of about once every three months to ease the effective memory effect. Nickel-hydrogen batteries because the cycle of life far below the nickel-cadmium batteries, almost less than recondition this approach.

Recommendation 1: each time before charging the 1691P discharge is not necessary and is harmful, because the battery life cut short by senseless.

Recommendation 2: The resistance to a battery anode is a discharge is not desirable, current can not control, too easy to put 0 V, or even lead series batteries 75UYF polarity reversal.

Immediately to the holidays, I made a three Ouxinlixue the "purchase common sense", no one roof » Oh, sad. 555555

Wiped away tears, redouble their efforts, today I will be my battery maintenance Dafa Quanpantuochu, we hope to point the applause!

I 777, the longest laptop battery thin now available 1.7 days, the longest available thick, 3.5 days, would like to know Zenmeyangzuo to the right » A closer look at, we can hope to play a help.

1, the new battery must be re-activated. To do a good job in filling deep-deep, to discharge that did not respond to boot compaq battery, sufficient to charge more than 14 hours.

2, two batteriesthe use, not just one, this bad before in another one. Rotation with the good battery.

3, do not have sufficient battery, must use plastic wrap, moisture-proof, leak-proof. This special attention. Do not, and other metal objects together.

4, feel bad battery, proposed to use ethanol or rubber, Evo N610C battery and phone contact with the battery contacts are polished to remove the oxide layer, can solve some incurable diseases. The best time to clean up after a period of time.

5, a reasonable set the phone, close the unnecessary procedures and reduce screen brightness can save electricity.

6, for a period of time can charge the Presario 1200 battery deep-deep, can increase capacity by 1% -4%.

Impact of laptop battery life of factors - the use of battery time did not meet expectations
 
The use of laptop computers in the process, some factors will make the battery depletion, and could even lead to the battery using the longest time less than the standard, it does not mean that these factors will damage the battery.
 
Impact on battery life is the time factor:
           1 factors: the speed of processors - the correct installation of Intel's chipset can drive system using Intel processor technology Speed step rate adjustment, which will extend the application system toshiba battery life.
           Factors 2: CD, DVD, CD-RW drive and the frequency read - trying to CD-ROM copy of the document directly to your hard disk for operations (including copy, delete and operational applications, etc.) will improve the battery life.
           Three factors: the total number of memory and memory - if the system open many applications, will take up a lot of hard disk space to do file-swapping (virtual memory), leading to the frequent drives to read and write, then more memory on the battery Use time more useful.
           4 factors: some of its applications to run automatically in the background, the CPU will increase the load, leading to reduced use of time - the proposed use of some common background of the closure process, only run the necessary software applications.
           Factors 5: LCD's brightness - the lower the setting of brightness for longer PA3331U-1BRS life, better use of in-use FN + under the direction keys or keys to adjust brightness.
           6 factors: Speed Step power management settings and - in the power management settings in the use of different power programme, will affect battery life.
           7 factors: the life of the battery - the battery life of the average a year, with the use of time and the increase in the number, the battery time to gradually reduce the use is normal.
           8 factors: the processor and system equipment deeper level of application (for example, see DVD movies and games 3 D) batteries will quickly reduce the time available.
           Factors 9: wireless devices and Bluetooth devices will speed up the battery consumption; without the need for wireless, you can use FN + F2 closed to save electricity.
10 factors: the use of the temperature of the environment - the use of too high or too low temperature will affect the cell batteries in the chemical activity, thus reducing the use of time and Satellite A75 life.

(1) reduce the brightness of the screen. However, large-screen LCD power, brightness can effectively reduce the use of the extended laptop battery time; how to adjust the brightness of notebook, please refer to specific:
http://support1.ap.dell.com/cn/zh/forum/thread.asp?fid=25&tid=45151
     (2) and PowerPlay, and other open SpeedStep power-saving features. Now the notebook and display processor chips have lower operating frequency and voltage to extend the use of the function of time, open its options can greatly extend the use of battery time;
     (3) notebook hard drive, it is one of the relatively power components, as long as power will be in a state of reading and writing, the process drives the number of visits, the more will drive more power, so under normal circumstances do not In large-scale software running on your hard drive, do not use the toshiba battery in a separate case for Disk Defragmenter. Notebook drives are also major power in notebooks, work full-speed drive than the drive for more power, but will also generate more heat, so when we do not use a longer time before the CD will be the best time to CD-ROM Taken out from the drive in. The frequent use of the CD-ROM, the best way is to use virtual drive software to its virtual hard disk, this is the most efficient way.
      Can try to install NERO DriveSpeed, PowerBooster software can reduce the drive, hard disk drives, such as the speed, can effectively reduce the power consumption of notebook;
     (4) external equipment. Like pcmcia cards, printers and other peripherals as long as connected to the notebook, even if it does not work will be the power consumption of notebook, so when we do not need to use these peripheral at best to take them from the notebook down. If not often use the port facilities such as modem PA3191U-1BRS, com mouth, infrared, wireless card, etc., preferably in the BIOS to disable.
     (5) software. Recommendations in the use of batteries, some do not use the system fully functional but demanding software. Regular customers have mentioned that playing the game, or to see movies online, 6-cell battery can only use one hour about the many, in fact, this is a normal phenomenon and is also too high expectations on the performance of the battery.
     (6) heat. Cooling the surface, notebook and laptop space, no contact, in fact, the relationship between the two very closely. Since laptops are smaller and needs its own cooling system to regulate heat. When the temperature reaches a certain temperature control procedures when fans started, will naturally increase the notebook power consumption, so as long as we can help notebook cooling, the temperature control good notebook, you can reduce the time to start a thermostatically controlled fan, and thus can Extend notebook PA3166U-1BRS life. Notebook on how to make better heat dissipation, the specific reference:
http://support1.ap.dell.com/cn/zh/forum/thread.asp?fid=5&tid=46556
     (7) make the best use of standby, sleep and other functions. When a longer time without the computer, allowing notebook standby or hibernation, saving power and extend the life of the computer. WINDOWS in the process of power management settings, we generally can be set to "portable / laptop." Members can also propose the display properties in the screen saver is set to direct "blank screen" and the waiting time is set to five minutes, so when we do not operate for a period of time notebooks, will direct a blank screen, and this than Screensavers to run other procedures more efficient.
  Regarding the controversy over the PA3331U-1BRS is continuing, if you have any objection, can http://bbs.dell.com.cn forum to ask questions, let us explore the topic of this debate.

The new 3. XG smart phones will be the traditional 2 G cellular phone and PDA features integrated and inclusive digital cameras, music players (MP3) and the Global Positioning System. So many types of functions laptop battery, can not be separated from the large number of components. Most of them have different power supply requirements, and the current consumption of more and more demands greater power.

        At the same time, consumers want more and more on the telephone. This paper will be given two power management system, which will help system designers in the latest generation of cellular phones among the conflicting objectives to seek the right balance - the rising power requirements; shape as much as possible should be small; efficiency To optimize the compaq laptop battery to extend working hours; power rail noise / ripple to maintain an acceptable range. Figure 1 show from 2 G to voice telephony to the development of video telephony, 3 G of the power demand has increased the estimate.


      The design of a power management system one of the most important task is to select a re-charging the battery. Currently, the only two realistic options and NiMH
Lithium-ion batteries. Lithium-ion battery energy density per unit volume and weight (the typical value of 270 ~ 300 Wh / l and 110 ~ 130 Wh / kg) generally higher than NiMH (220 ~ 300 Wh / l and 75 ~ 100 Wh / kg). Therefore, if the same energy, lithium-ion Presario 1200 battery will be small size and weight also at the same level of less than NiMH batteries. In addition, lithium-ion battery voltage of 3.6 V NiMH also higher than that of the 1.2 V.

        Most of the cellular phone power consumption in the 1.2 V and 3.3 V voltage track. In improving the efficiency of switching converter, from a high voltage buck, access to the lower voltage, the efficiency is higher than that of the corresponding from the lower voltage rail to transform high-pressure situation. Lithium-ion Presario 2500 battery which is the best option.

IC designers must determine the type of power - with integrated FET, a switch-based ICP-converters, non-inductive switching converter (or charge pump) might linear regulators laptop battery.

        On efficiency, the switch-based ICP device has the highest overall efficiency, followed by a charge pump and linear regulator. Cost and efficiency are usually inversely proportional to the linear regulator is the most expensive, followed by the charge pump and switching power supply based on the most expensive inductors. Linear Regulators no output ripple, and the charge pump There is a certain output ripple compaq laptop battery, the output ripple switching device is the highest among the three. On the solution of the total size, linear regulators is the smallest generally only one input and an output capacitor. Apart from the charge pump input and output capacitor, but also needs additional one or two "flying" in capacitance. SCF is a need to ICP, its size and the size of the package.

        2 G in the phone, digital devices (such as the DSP and ADC) or analog devices (such as power management system) of the low level of integration. Design power management systems, system designers generally give priority to cost and size, and only then efficiency. As linear regulators can reduce the input voltage, the battery voltage dropped to its 3.3 V after will not be able to work. The past, the choice of low-to middle-general of the current linear regulators to transform the Presario 2500 battery voltage to 2.8 V ~ 3.0V within the scope of power rails.

        In 3. XG phone chipset, the baseband processor now includes a DSP, a microprocessor / controller, RF control of the ADC and DAC, and audio signal processing circuit. Processor core voltage dropped to 1.2 V, or even lower, and I / O and peripherals, the voltage dropped to 2.5 V ~ 3.0V range. As 3. X G Tel power rail requirements of generally higher than the current 2 G phones, the 3. XG designers Presario 700 battery need to exceed the efficiency of the linear regulators DC / DC converters, in order to ensure a longer battery life.

Emergency use of battery power to provide energy, in order to obtain a high enough voltage batteries are usually a multi-series approach to work, for example, 24,32 or 48 lead-acid laptop battery components. Battery failure is often the single cell from the beginning of failure, especially in the use of a longer time period but not over the use of batteries, relying on the routine maintenance check the time-consuming and inconvenient, does not conform to the needs of modern management . Therefore, the single cell voltage automatic inspection in order to timely identify problems, it becomes extremely important. And the inspiron battery-voltage batteries to measure the following major technical difficulties exist.

     (1) reduce costs from the perspective of multiple choice can be measured, but their range exceeds the standard analog [1] switching voltage range of products and machinery used in the relay will speed, life and work of the reliability Are not satisfactory.

     (2) To ensure the accuracy of measurement, the Latitude C840 battery unit by suspension measurement, system design to consider signal acquisition and signal processing circuit to take effective electrical circuit isolation.

     (3) The battery pack increase in the number of batteries in series, measuring circuit difficult to reduce power consumption. There are many domestic units on a single battery terminal voltage side of the measuring method proposed, structural resistance network from voltage, relay switch and V / F conversion from non-contact sampling voltage.

     In theory analysis of this method is feasible, but in practice it difficult to achieve. For example, 24 to 12 V nominal voltage Inspiron 8000 battery, single-cell testing for the accuracy of O. 5% of the test system, single-cell testing absolute error is ¡À 60 mV, 24½Úseries accumulation of absolute error up to 1.44 V, obviously, the relative error of up to 12 percent, the emergency power monitoring systems often Wu Baojing result, we can not meet the emergency power monitoring system.

A few days ago, "First Financial Daily" from Shenzhen BAK Battery Company, the Dongguan New Energy Electronics (ATL) and BYD shares (01211. HK) batteries, and other manufacturers that Japan and South Korea in the fourth quarter of the laptop battery factory-core To the accident, caused by laptop battery market by 10 percent of the vacancies, Asus, Dell, HP and other international giants have notebooks to the mainland of China looking for battery suppliers. Shenzhen BAK Battery, Dongguan new energy and BYD have adopted the international notebook manufacturers such an early stage of certification, respectively notebook OEM leading enterprises Quanta, HP, Dell and Asustek some orders, the success of Japan and South Korea˺¿ªGiant in the field of notebook batteries by the establishment of the "Maginot" line of defense.

"Although we have the cost advantage of about 20 percent, but LG and Samsung of South Korea as the representative rate of production resume very quickly, they are trying to stop the entry of domestic manufacturers." Shenzhen BAK hp Battery, president of Assistant Liu Houde said.

Breakthrough in Japan-South Korea line of defense

According to the Shenzhen BAK Battery Company's website show that China BAK is the first to enter the field of notebook batteries battery manufacturing enterprises and the establishment of the domestic first automated cylindrical lithium-ion F4809A production line. Last year, BAK Battery and HP have signed a framework agreement, the company at least 50 percent of the cylindrical lithium-ion battery production capacity to supply Hewlett-Packard or HP designated battery packaging manufacturers.

BYD shares battery business and related official said, the company in February this year has already passed the initial certification Asustek, are available to Asustek, also began to negotiate with the Lenovo Group. In addition, all of BYD-month supply of 100,000 laptop F4812A OLPC group.

It is understood that although China is the world's second-largest lithium-ion production and exporting countries, but in high-end notebook batteries lithium battery manufacturing is almost a blank, especially in automated production. Statistics show that the relevant information, the global notebook computer manufacturers to use most of the battery manufacturers in Japan and South Korea manufacturing, and the world's top six mobile PC manufacturers to use the battery is not a Chinese F2019 manufacturing firms.

"Prior to this, Sony, Sanyo, Matsu****a and LG, and other international giants occupied 90% of the laptop battery share." ATL and Shenzhen BAK Battery, the relevant people responsible for that, in fact, Japan and South Korea companies are working to prevent Chinese companies to enter this notebook batteries Area. For example, companies from Japan with the purchase of the expansion of the production line equipment, the arrival time was delayed again and again, always the first to meet the needs of their local enterprises.

Long certification

However, BYD, BAK F2019B, and the ATL, the greater problem is by Dell, HP, Asustek and other international giants the real recognition.

"Giant on the international notebook vendor certification, the production process involves the company, management and staff of human rights and the providers of raw materials such as various levels." ATL Shenzhen BAK Battery, and the relevant responsible person said that these giants of the certification is a very long Process. Currently the company only through these giants of the early certification, only small quantities available, and they did not truly become a giant suppliers.

Perhaps, BYD a Nokia mobile phone providers that the process can become an international giant providers difficult. BYD in 2003 to intercept phone parts and components industry, and Nokia cell phone F1739A suppliers access to the identity of Nokia, the mobile phone business and BYD outbreak of the growth in 2005 and 2006, it accepted that Nokia BYD In addition to the battery as a parts supplier other than the time spent almost two years.

Lithium-ion batteries have higher energy than the weight and volume ratio of energy, no memory effect, repeatedly using more often, longer life, prices are getting lower and lower. These features promote its products to more portable in the direction of smaller and lighter, making choice of a single lithium-ion laptop battery-powered products are also more and more.
Lithium-ion battery is the inadequacy of the relatively stringent requirements of the charger, for the protection of the circuit higher. Their requirements charging constant pressure is constant, for the efficient use of battery capacity, will be lithium-ion batteries to maximum voltage, but the pressure will cause the compaq battery charging damage, which requires higher controlling precision (precision than 1 %). In addition, the low-voltage batteries need to pre-charge, in addition to end-of-charge voltage detector test, the need to use other means of support as a necessary and sufficient to prevent the emergency measures, such as testing the battery temperature, charging time limit for the batteries to provide additional protection . This shows that achieving security and efficient control of a lithium-ion rechargeable battery promote the use of the bottleneck.

     Lithium battery charger is the basic requirement of a specific charge current and charge voltage, so as to ensure safety of rechargeable batteries. Other additional charge Accessibility is to improve the battery life, simplify the operation of the charger, including the discharge of the battery to use trickle charge, the Presario R3000 battery voltage detection, input current limit, charging off after the completion of the charger, battery discharge automatically after some Start charging, and so on. All or some of these functions can be in charge of the chip to achieve, of course, can make use of ASIC, discrete devices, or in the microprocessor on the basis of software used to achieve
  At present, mobile phone chargers on the market range, but there are also many poor quality of the products failed. In the country last year, product quality supervision and checking of results, nearly 40 percent of the manufacturers charger failure. The main problem in: the power grid and the exchange of the connection, power terminal voltage harassment, harassment radiation field and charge voltage areas PCGA-BP2T. In addition, some products of low temperature performance, rated capacity, discharge performance, security, protection of property in areas such as quality issues. These quality problems will affect the normal use of mobile phones, but will also affect the life of cell phones, also may seriously harm consumers.

     Now on the market found some fake and shoddy portable phone battery charger. These chargers due to a very low price, easy to carry, there are many more mobile phone users are willing to use the charger to the battery charge. Inferior charger is actually not a security guarantee for the simple transformers, circuit protection because of the lack of internal security guarantees, such as spare parts, thus weight than the original light for many. But in fact, now that the use of mobile phone batteries or lithium-ion PCGA-BP2V nickel-hydrogen batteries for batteries, chargers on the voltage and current characteristics and a high security requirements. These chargers because of fake and shoddy design simple, using inferior materials, processing means rough, the phone's battery performance and life expectancy have great damage. Has failed to protect the charger circuit, the charge can not guarantee that when the current stability and thus will burn battery or even the risk of explosion.

     At present there are mainly mobile phone charger travel charger, Block-chargers and car chargers. Manufacturers original travel charger and Block-chargers, designed to use more sophisticated protection circuit switch or circuit design, PCGA-BP71 charging played a good protection. Car charger can be user-friendly for mobile phones in the car charging, insert one end of Cigarette Lighter, the other end of the phone connection, but it is not appropriate in the medium and long-term vehicle charge, because the higher temperature in the car.