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

 

 

Battery type

State and Retention Time

 

 

Battery pack (3 cell)

about 18 hours (sleep mode)

 

about 7 days (shutdown mode)

 

 

Battery pack (6 cell)

about 1 days (sleep mode)

 

about 14 days (shutdown mode)

 

 

Battery pack (9 cell)

about 2 days (sleep mode)

 

about 21 days (shutdown mode)

 

 

RTC battery

about 3 months

 

 

Extending battery life

To maximize the life of your battery packs:

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.

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 then 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 LED 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 LED should glow white/green, and the Battery LED 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 white/green.

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.

User’s Manual

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Toshiba PRO A300D user manual Retaining data with power off, Extending battery life

A300, PRO A300, PRO A300D, A300D specifications

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