Lenovo ThinkPad i Series 1157 ThinkPad 570 On-line User's Guide - Page 36
Saving battery power, Using the power management modes
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Saving battery power Your battery pack should be useful for approximately 3 years, or 300 charge-discharge cycles. The number of years or charge-discharge cycles might vary depending on how efficiently you use your computer. This section describes the following: Using the power management modes Using the other battery-saving methods Using the power management modes You can run your computer on battery power for a considerable time by using the power management modes (standby mode, suspend mode, and hibernation mode). Note: Even if you don't set the low-battery alarm, the charge indicator will let you know when the battery is low, and then your computer will automatically enter the power-saving mode. This default low-battery behavior is independent of the operating system, so the computer might behave differently from your setting if you set the low-battery alarm. The computer chooses appropriately between your setting and the default setting. Attention Do not enter suspend or hibernation mode when your computer is doing any of the following: Playing or recording audio Playing a movie Playing a game Running any other multimedia application Stop these applications before entering suspend or hibernation mode. Standby mode 30 IBM ThinkPad 570 Online Book