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Specifications Electrical - 11
Electrical
Main Battery
Rechargeable nickel-metal-hydride (NiMH) battery
2-4 hours of use before recharging
Recharge time: slightly more than 2 hours
Power Adapter
100-240 VAC line voltage
45 W, 50-60 Hz
Backup Battery
50 milliamp-hour rechargeable battery for calendar/clock
maintenance. Also backs up contents of RAM for a few minutes
while battery is changed (when PowerBook is in sleep mode)