Toshiba toshiba satellite l550/ satellite pro l550/ satellite l550d/ satellite pro l550d series

Power and Power-up Modes

Use only the computer connected to an AC power source or the optional TOSHIBA Battery charger to charge the battery pack. Never attempt to charge the battery pack with any other charger.

Time

The following table shows the approximate time required to fully charge a discharged battery.

Charging time (hours)

Battery type	Power on	Power off
Battery Pack	about 12 or longer	about 4 or longer
(3 cell / 6 cell / 12 cell)
RTC battery	about 24	about 24 with AC or
		Battery pack

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. Please refer to the section Maximizing battery operating time for further information.

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° to 35°C (41° 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 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.

■The battery has completely discharged and been left in the computer for a long time.

■A cool battery is installed in a warm computer.

In such cases you should follow the steps as detailed below:

1.Fully discharge the battery by leaving it in the computer with the power on until the system automatically turns itself off.

2.Connect the AC adaptor to the DC IN 19V jack of the computer, and to a wall outlet that is supplying power.

3.Charge the battery until the Battery indicator glows green.

User’s Manual 6-6