The Macintosh Portable battery is a sealed lead-acid battery and must be
recharged periodically in order to maintain normal battery life. If the
battery falls below 5.4 volts, it cannot be recharged.
To prevent the battery from completely discharging, keep it plugged in to
the Battery Recharger, or leave the Macintosh Portable plugged in to the
power adapter whenever possible.
When neither of these methods is possible, observe these precautions for
recharging and storing the battery:
- Do not leave the battery in the Macintosh Portable for longer than TWO
WEEKS without plugging in the power adapter.
- If you store the battery, recharge it overnight before storing it,
then store it in a cool, dry place.
- Do not leave a battery in storage for longer than SIX MONTHS without
recharging it.
Failure to follow these steps for recharging and storing the battery
will result in a dead battery that CANNOT be recharged and will need to be
replaced.