Toshiba PSU4SU User Manual

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Changes to these settings may result in system performance or 
stability issues. Users who are not completely familiar with the power 
management component of the system should use the preset 
configuration. For assistance with setup changes, contact Toshiba’s 
Customer Support Center.

The battery needs to be charged before you can use it to power the 
computer.

Always use the AC adaptor specified by Toshiba. You can 
order a Toshiba AC adaptor from Toshiba’s Web site at 

Battery charge time may vary depending on the applications, power 
management settings, and features used.

To charge the main battery, plug the computer into a live electrical 
outlet. The battery charges whether the computer is on or off.

The battery may not start charging immediately under the following 
conditions:

❖

The battery is extremely hot or cold. 

To ensure that the battery charges to its full capacity, wait until 
it reaches room temperature (50 to 80 degrees Fahrenheit, 10 to 
26 degrees Celsius).

❖

The battery is almost completely discharged. 

Leave the power connected and the battery should begin 
charging after a few minutes.

HINT: Once the battery is fully charged, we recommend that you 
operate your computer on battery power until the battery discharges 
completely. Doing this extends battery life and helps ensure accurate 
monitoring of battery capacity.

NOTE