Lenovo Notebook Computer User Guide
[F2] to enter the BIOS setup program.
¾Unplug the AC adaptor; let the computer operate on the battery power until it automatically turns off.
¾Plug the AC adaptor to fully charge the battery.
¾Repeat the above steps for 2 or 3 times to erase part of the
battery memory that was affected and extend the battery life.
Hint: Because the lithium‐ion battery has a finite lifecycle, use the external power source as much as possible to extend the battery life.
1.3.4Checking the battery status
When you are using the battery power, you can get the battery status and the remaining power of the battery through the following ways:
1.Double‐click the battery icon 
at the right‐bottom of Windows taskbar (By the default, the battery icon only shows when the computer is using battery power.) to pop up the battery status window. It shows the battery status and its remaining power.
2.Hold the mouse on the battery icon
at the right‐bottom of Windows taskbar (By the default, the battery icon only shows when the computer is using battery power.) to display the remaining battery power automatically.
;
When the battery power is low，the system will notify the user of
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