Lenovo ThinkPad X21 English - 12P0280 - ThinkPad X20, X21User's Reference - Page 18

Extending the usefulness of the battery

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Extending the usefulness of the battery Extending the usefulness of the battery The amount of battery power consumed by your computer depends on such conditions as the frequency of use, the operating temperature, and the period in storage (if unused). The following tips can help you to extend the life of your battery: Do not recharge the battery pack until all of its power is used. Recharging a battery pack that is not completely discharged can shorten battery life. Once you start charging the battery pack, do not use it until it is fully charged. Whenever possible use the ThinkPad battery power-saving modes. Decrease the brightness of the LCD. Use power management. Each operating system comes with its power management system. Whenever the internal serial devices(the modem and the serial port) are not in use, stop the supply of power to them. If you will not use the computer for a long period, remove the battery pack and keep it in a cool place. 14 ThinkPad X20 User's Reference

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Extending the usefulness of the battery
Extending the usefulness of the battery
The amount of battery power consumed by your computer depends
on such conditions as the frequency of use, the operating temper-
ature, and the period in storage (if unused). The following tips can
help you to extend the life of your battery:
±
Do not recharge the battery pack until all of its power is used.
Recharging a battery pack that is not completely discharged can
shorten battery life.
±
Once you start charging the battery pack, do not use it until it is
fully charged.
±
Whenever possible use the ThinkPad battery power-saving
modes.
±
Decrease the brightness of the LCD.
±
Use power management. Each operating system comes with its
power management system.
±
Whenever the internal serial devices(the modem and the serial
port) are not in use, stop the supply of power to them.
±
If you will not use the computer for a long period, remove the
battery pack and keep it in a cool place.
14
ThinkPad X20 User's Reference