Apple Macintosh PowerBook 1400 - Manual (Page 80)

Recharging the battery
To recharge the battery, plug in the power adapter. Do not use an external
recharger designed for another Macintosh PowerBook model.
Use only the power adapter that came with your computer or a recharger
designed specifically for this model.
A lightning bolt icon appears in the battery monitor portion of the Control
Strip when the power adapter is plugged in and a battery is recharging.
The battery is recharged regardless of whether you are using the computer or
the computer is off or in sleep, so long as you use the adapter that came with
your computer.
Note: A battery recharges only in the battery compartment, on the left side of
the computer’s front panel. Although you can store a battery in the expansion
bay (on the right side of the front panel), the battery cannot be charged there.
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Power adapter port
Power adapter plug
Power adapter
Power cord
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