Apple Macintosh PowerBook 190 Series - Manual (Page 84)

Recharging the battery
To recharge the battery in your computer, plug in the power adapter. (Do not
use an external recharger, even one designed for another Macintosh
PowerBook model. Macintosh PowerBook 190 series batteries should be
charged inside the computer.)
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 will recharge regardless of whether you are using the computer,
or the computer is off or in sleep.
WARNING Use only the power adapter that came with your computer.
Adapters for other electronic devices (including other portable
computers) may look similar, but they may damage your computer.
Power adapter
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Power adapter port
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