Table 1-13 Data Preservation Time - Toshiba PORTEGE M300 Maintenance Manual

1 Hardware Overview
1.9.2 Battery Charging Control
Battery charging is controlled by a power supply microprocessor. The power supply
microprocessor controls power supply and detects a full charge when the AC adapter and
battery are connected to the computer.
θ 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. Refer to the following Table 1-12.
Table 1-12 Time required for charges of main battery
Normal charge
(Power on)
Quick charge
(Power off)
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
θ Data preservation time
When turning off the power in being charged fully, the preservation time is as
following Table 1-13.
Standby mode
Power off
1-28
Condition
4700mAh
8800mAh
4700mAh
8800mAh

Table 1-13 Data preservation time

Condition
4700mAh
8800mAh
4700mAh
8800mAh
Charging Time
About 4.0 to 5.5 (hours)
About 6.0 to 9.0 (hours)
About 3.0 (hours)
About 4.5 (hours)
preservation time
About 5 days
About 9 days
About 40 days
About 80 days
PORTEGE M300 Maintenance Manual (960-504)
1.9 Batteries