Mitsubishi Electric Pedion Laptop Owner's Handbook Manual page 4

Charging the internal battery
The Pedion's internal battery begins to charge as soon as
you connect the Pedion to the AC power supply.
We recommend that you let the battery fully charge
before using the Pedion for the first time. This should
take about 3 hours. (If you use the Pedion while the
battery is charging, it could take up to 12 hours.)
A fully charged battery should enable the computer to be
used without an AC power supply for about 1.8 hours.
The Pedion's Battery Status light (the middle of three lights
on the right-hand side) is orange while the battery is
charging, green when it is charged.
A new battery may run down relatively quickly. This is
quite normal. If you fully recharge the battery each time it
runs down, it will soon achieve its optimum performance.
For more information, see the chapter on "Battery and
Power Management" in the Owner's Handbook.
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Note
The batteries in the optional Battery Pack are also initially
uncharged. If the Battery Pack is attached to the Pedion, both
the Battery Pack and the Pedion's internal battery can be
recharged at the same time.
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