Apple PowerBook (5300 Series) - Manual (Page 140)

Caring for batteries
Always handle batteries carefully.
m Always put the battery cap on the battery when the battery is out of the
Macintosh PowerBook. The battery contacts should not be exposed when
the battery is out of the computer.
m Never get batteries wet.
m Do not short-circuit the battery terminals (that is, do not touch both
terminals with a metal object). Doing so may cause an explosion or a fire.
m Do not drop, puncture, disassemble, mutilate, or incinerate the battery.
m Recharge batteries only as described in this manual and only in ventilated
areas.
m Do not leave batteries in hot locations (such as the trunk of a car).
m Do not leave a battery in your computer for longer than a week without
plugging in the power adapter.
m Do not leave a battery in storage for longer than six months without
recharging it.
m Take dead batteries to an Apple-authorized service provider for recycling or
proper disposal. The batteries contain hazardous chemicals and should not
be thrown out with household or office trash.
129 Health, Safety, and Maintenance Tips