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1.9 Batteries | 1 Hardware Overview |
θQuick 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 or in suspend mode. Table
Table 1-13 Time required for charges of battery
| Main battery Charging Time | Second battery Charging Time |
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Normal charge | About 3~12 hours | About 2.5~9 hours |
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Quick charge | About 2.5 hours | About 2.5 hours |
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Quick battery 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.
θTrickle charge
When the main battery is fully charged and the AC adapter is plugged in, the power supply microcontroller automatically switches from quick charge to trickle charge.
1.9.3 RTC Battery
The RTC battery provides the power supply to maintain the date, time, and other system information in memory. Table
Table 1-14 RTC battery charging time and data preservation time
| Item | Time |
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Charging | AC adapter or main battery in use | 8 hours |
time | (Power ON) |
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Data preservation time (when fully charged) | About 30 days | |
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Data preservation time (when stand by) | About 4 days | |
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PORTEGE A100 Maintenance Manual |