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Battery Charging
Why didn't my fully-charged spare battery have as
much power as a newly charged battery?
Batteries self-discharge when they are not being
charged (about 1% per day for a Li-Ion battery). To
make sure a battery pack is fully charged, recharge it
before you need it. Keep the battery installed in the
system and keep the AC adapter connected to AC
power whenever possible.
Why is my battery operation time getting shorter?
Heat or residual memory might be shortening the
battery operation time.
The battery is heat sensitive and can only be charged to
its maximum if the battery and its environment is
within 59 to 77 degrees Fahrenheit (15 to 25 degrees
Centigrade). The more the temperature deviates from
this range during recharging, the less chance the battery
can fully charge. To recharge the battery to its full
capacity, it is recommended to cool down the unit by
unplugging the AC adapter. When the unit has cooled,
then plug in the AC adapter to start recharging again.
Also, use the Battery Refresh feature in the BIOS Setup
utility to fully discharge your battery and eliminate any
residual discharge effect. See "Standard Menu" in
Chapter 3 for information about this feature.
Once refreshed, your battery is conditioned to recharge
to its full capacity with the AC adapter connected to
AC power.
Frequently Asked Questions C-7
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