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Lenovo Portable Computer User Guide
22
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 due to self-discharge. This is the inherent feature of
lithium-ion battery. In this case, use the external AC power or
recharge the battery. If you still cannot turn on the computer (the
battery indicator also no 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.
HintIf you will not use the computer in a long time, remove
the battery pack and store it separately.
NoteCharge and discharge the battery at least once three
month to avoid the battery malfunctions by
over-discharge.
1.4.3 Battery initialization
After a long time using, the battery’s operating time is much shorter
than the first use. The reason is the lithium-ion battery memory
effect. Do the battery initialization to erase part of the memory
effect.
The battery initialization is the process of fully-charging the battery,
fully-discharging and fully-charging it again. Follow the following
steps to perform the battery initialization:
1. Make sure the computer is turned off. Then connect the
computer to an external AC power to charge the battery.