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Retaining data with power off, Extending battery life – Toshiba Satellite U200 User Manual

Page 129

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User’s Manual

6-11

Power and Power-Up Modes

Retaining data with power off

When you turn off your computer with fully charged batteries, the batteries

retain data for the following approximate time periods:

Retention time

Extending battery life

To maximize the life of your battery pack:

At least once a month, disconnect the computer from a power source

and operate it on battery power until the battery pack fully discharges.

Before doing so, follow the steps below.

If you have extra battery packs, rotate their use.

If you will not be using the system for an extended period, more than

one month, remove the battery pack.

Disconnect the AC adaptor when the battery is fully charged.

Overcharging makes the battery hot and shortens life.

If you are not going to use the computer for more than eight hours,

disconnect the AC adaptor.

Store spare battery packs in a cool dry place out of direct sunlight.

Battery type

State and Retention Time

Battery pack (4700mAh)

about 6 days (Standby Mode)

about 60 days (Boot mode)

RTC battery

30 days

1. Turn off the computer’s power.
2. Disconnect the AC adaptor and turn on the computer’s power. If it

does not turn on go to step 4.

3. Operate the computer on battery power for five minutes. If the

battery pack has at least five minutes of operating time, continue

operating until the battery pack is fully discharged. If the Battery

indicator flashes or there is some other warning to indicate a low

battery, go to step 4.

4. Connect the AC adaptor to the computer and the power cord to a

power outlet. The DC IN indicator should glow blue, and the

Battery indicator should glow orange to indicate that the battery

pack is being charged. If the DC IN indicator does not glow, power

is not being supplied. Check the connections for the AC adaptor

and power cord.

5. Charge the battery pack until the Battery indicator glows blue.