Care and use of the battery pack
Procedures
To recharge a battery pack while it is installed in the computer, connect the AC adaptor to the DC IN socket and plug the other end into a working outlet.
The Battery indicator glows amber when the battery is being charged.
CAUTION: Use only the computer connected to an AC power source or charge the battery pack. Do not attempt to charge the bat- tery pack with any other charger.
Time
The following table shows the approximate time required to fully charge a dis- charged battery.
Charging time (hours)
Battery type | Power on | Power off |
Battery pack (6 cell) | about 4 or longer | about 3 or longer |
Battery pack (12 cell) | about 5 or longer | about 4 or longer |
RTC battery | about 14 | Doesn’t charge |
Note: The charging time when the computer is on is affected by ambient temperature, the temperature of the computer and how you use the computer. If you make heavy use of external devices, for example, the battery might scarcely charge at all during operation. Refer also to the section Maximizing battery operating time.
POWER AND POWER- UP MODES
Battery charging notice
The battery may not charge right away under the following conditions:
❑The battery is extremely hot or cold. If the battery is extremely hot, it might not charge at all. Also, to ensure the battery charges to its full capacity, charge the battery at room temperature of 10° to 30°C (50° to 86°F).
❑The battery is nearly completely discharged. Leave the AC adaptor con- nected for a few minutes and the battery should begin charging.
The Battery indicator may show a rapid decrease in battery operating time when you try to charge a battery under the following conditions:
