When you purchase your Dell Inspiron Laptop Batteries, charge the Dell battery to 100 percent, discharge it completely, and then fully charge it to 100 percent again to help the laptop battery remember exactly how much electrical charge it can hold. From then on, you’ll never need to completely discharge the battery again, but always make sure when charging it that you let it reach 100 percent.
Decrease hard drive activity To minimize the frequency with which your hard disk has to spin up to access data, Salinas recommended defragmenting your hard drive regularly. Battery on laptop optimizes the placement of data on the drive so that it can be found more quickly.
Turn off unused devices Both of our gurus mentioned disabling unused devices. Many new laptop and battery provide a hard-wired On/Off switch for the Wi-Fi radio for this reason. Beyond that, you should go to the Control Panel, select System/Hardware/Device Manager, and disable the Ethernet adapter, infrared transceiver, and Bluetooth radio.
Don’t use any external devices. USB and PC-Cards use your dell xps m1330 battery to function, even when you aren’t using them! Have an EVDO card or maybe a USB mouse? Remove them if you can. Even a memory card reader in your PC-MCIA slot uses power just by being in there. The effect varies based on the type of device, but even a few minutes here and there add up significantly.
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