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.