Lenovo 3000 Series - Manual (Page 23)

Lenovo Notebook Computer User Guide
indicator located in front of the computer.
Hint: No matter whether the battery is installed in the
computer or not, it always performs self‐discharge. (About
1% a day)
If the battery has not been used for a long time, it might have no
power because of self‐discharge. This is the inherent feature of
lithium‐ion battery. You should use the external power source or
recharge the battery.
If you still cannot turn on the computer (the battery indicator also
doesn’t flash), it means the battery is in self‐protection state. Charge
the battery for 2~4 hours to activate the battery. Turn on the
computer again when the battery indicator flashes.
Hint: If you do not plan on using the computer for a long
time, remove the battery pack and store it separately.
Note: Charge and discharge the battery at least once every
three months to avoid the battery malfunctions by
over‐discharge.
1.3.3 Battery initialization
After using the battery for a long time, the battery’s operating time
is much shorter than the first use. The reason is that the lithium‐ion
battery memory is affected. Complete the battery initialization
process to erase the affected part of the battery memory.
The battery initialization is the process of fully‐charging the battery,
fully‐discharging the battery and fully‐charging it again. Complete
the following steps to perform the battery initialization process:
¾ Make sure the computer has been turned off; connect the
computer to an external power source to charge the battery.
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¾ Turn on the computer when the battery is fully‐charged. Press