![]() Then disconnect the AC adapter and try to start up under battery power. If the PB starts up in the morning on AC power, set the date and time correctly, shut the computer down, insert the main battery, and allow 48 hours with AC power connected in an attempt to charge the main battery. If the Powerbook won't start in the morning under AC power, the backup battery is shot, has lost the ability to be charged, and must be replaced. Try this: remove the main battery and leave the AC power adapter connected overnight in an attempt to recharge the backup battery. A Tibook with a dead backup battery generally will not start up at all, even with AC power connected. ![]() ![]() With no power being supplied to the Mac for several months, not only has your main battery gone flat (and may never again be able to take a charge), but your internal backup battery has also gone flat.
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