(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.