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User’s Manual 6-8
Power and Power-up Modes
Battery Charging Notice
The battery may not charge right away under the following conditions:
■ The battery is extremely hot or cold. If the battery is extremely hot, it
might not charge at all. Also, to ensure the battery charges to its full
capacity, charge the battery at room temperature of 10° to 30°C (50° to
86°F).
■ The battery is nearly completely discharged. Leave the AC adaptor
connected for a few minutes and the battery should begin charging.
The DC IN/Battery indicator may show a rapid decrease in battery
operating time when you try to charge a battery under the following
conditions:
■ The battery has not been used for a long time.
■ The battery has completely discharged and been left in the computer for
a long time.
■ A cool battery is installed in a warm computer.
In such case, follow the steps below.
1. Fully discharge the battery by leaving it in the computer with the
power on until the power automatically shuts off.
2. Plug in the AC adaptor.
3. Charge the battery until the DC IN/Battery indicator glows green.
Repeat the steps two or three times until the battery recovers normal
capacity.
Monitoring Battery Capacity
Remaining battery power can be monitored in Power Options.
■ Clicking the battery icon on the Taskbar
Leaving the AC adaptor connected will shorten battery life. At least once a
month, run the computer on battery power until the battery is fully
discharged, then recharged the battery.
■ You should wait at least 16 seconds after turning on the computer
before trying to monitor the remaining operating time. This is because
the computer needs this time to check the battery's remaining capacity
and then calculate the remaining operating time, based on this together
with the current power consumption.
■ Please be aware that the actual remaining operating time may differ
slightly from the calculated time.
■ With repeated discharges and recharges, the battery's capacity will
gradually decrease. In view of this it will be noted that an often used,
older battery will not operate for as long as a new battery even when
both are fully charged.