Toshiba Satellite Pro C870 - Manual (Page 85)

Procedures
To recharge a battery pack, connect the AC adaptor to the DC IN 19V jack
and plug the other end into a working outlet - the DC IN/Battery indicator
will glow amber while the battery is being charged.
Use only the computer connected to an AC power source or optional
TOSHIBA Battery charger to charge the battery pack. Never attempt to
charge the battery pack with any other charger.
Charging Time
The following table shows the approximate time required to fully charge a
discharged battery.
Battery type Power off Power on
Battery pack
(24Wh, 3 cell) 3 hours max 3~5 hours
Battery pack
(48Wh, 6 cell) 3 hours max 3~5 hours
Battery pack
(66Wh, 6 cell high
capacity) 4 hours max 4~5 hours
Please be aware that the charging time when the computer is on is affected
by ambient temperature, the temperature of the computer and how you are
using the computer - if you make heavy use of external devices for
example, the battery might scarcely charge at all during operation.
Battery charging notice
The battery may not begin charging immediately under the following
conditions:
The battery is extremely hot or cold (if the battery is extremely hot, it
might not charge at all). To ensure the battery charges to its full
capacity, you should charge it at room temperature of between 5°C to
35°C (41°F to 95°F).
The battery is nearly completely discharged. In this instance you
should leave the AC adaptor connected for a few minutes and the
battery should begin charging.
The DC IN/Battery indicator may show a rapid decrease in battery
operating time when you try to charge a battery under the following
conditions:
The battery has not been used for a long time.
User's Manual 4-27