1.7 Batteries 1 Hardware Overview
PORTÉGÉ M500 Maintenance Manual (960-559) [CONFIDENTIAL] 1-21
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 Material Output voltage Capacity
Main battery G71C0004G710
G71C0004G810 Li-Ion 10.8 V 4,700 mAh
RTC battery GDM710000041 Ni-MH 2.4 V 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 Power on (hours) Power off (hours)
Main battery (4,700 mAh) About 5.5 to 12.0 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.