Toshiba M500 ST5405 Maintenance Manual - Page 35

1.7 Batteries 1 Hardware Overview 1.7 Batteries The computer has two types of batteries as follows: ‰ Main battery ‰ Real Time Clock (RTC) battery The battery specifications are listed in Table 1-7. Table 1-7 Battery specifications Battery name Main battery G71C0004G710 G71C0004G810 RTC battery GDM710000041 Material Li-Ion Ni-MH Output voltage 10.8 V 2.4 V Capacity 4,700 mAh 15 mAh 1.7.1 Main Battery The removable main battery pack is the computer's main power source when the AC adaptor is not attached. The main battery maintains the state of the computer when the computer enters in resume mode. ‰ Battery Charge When the AC adapter is connected, normal charging is used while the system is turned on and quick charge is used while the system is turned off. Table 1-8 lists the charging time required for charges. Table 1-8 Time required for charges Battery type Main battery (4,700 mAh) Power on (hours) About 5.5 to 12.0 Power off (hours) About 3.0 Charge is stopped in the following cases. 1. The main battery is fully charged. 2. The main battery is removed. 3. Main battery or AC adapter voltage is abnormal. 4. Charging current is abnormal. PORTÉGÉ M500 Maintenance Manual (960-559) [CONFIDENTIAL] 1-21