Toshiba Portege WT20 Portege WT20-B Series Windows 8.1 User's Guide - Page 113

Power and the battery, Windows online Help.

Page 113 highlights

113 If Something Goes Wrong Power and the battery For more information about Device Manager, refer to Windows online Help. Power and the battery NOTE The device battery is not accessible by the user. Your device receives its power through the AC adaptor and power cord/cable or from the system battery. Power problems are interrelated. For example, a faulty AC adaptor or power cord/cable will neither power the device nor recharge the battery. Here are some typical problems and how to solve them: The Battery light does not come on when you plug in the AC adaptor and power cord/cable. Make sure the AC adaptor and power cord/cable are firmly plugged into both the wall outlet and the device. If the AC power light still does not come on, check that the wall outlet is working properly by plugging in a lamp or other appliance. The AC adaptor and power cord/cable work correctly, but the battery will not charge. The battery does not charge while the device is consuming full power. Try turning off the device. The battery may be too hot or too cold to charge properly. If you think this is the probable cause, let the battery reach room temperature and try again. If the battery has completely discharged, it will not begin charging immediately. Leave the AC adaptor and power cord/cable connected, wait 20 minutes and see if the battery is charging. The battery appears not to power the device for as long as it usually does. If you frequently repeat shallow charge and discharge, the battery meter may become inaccurate. Let the battery discharge completely, then try charging it again.

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113
If Something Goes Wrong
Power and the battery
For more information about Device Manager, refer to
Windows online Help.
Power and the battery
The device battery is not accessible by the user.
Your device receives its power through the AC adaptor and
power cord/cable or from the system battery. Power
problems are interrelated. For example, a faulty AC adaptor
or power cord/cable will neither power the device nor
recharge the battery.
Here are some typical problems and how to solve them:
The Battery light does not come on when you plug
in the AC adaptor and power cord/cable.
Make sure the AC adaptor and power cord/cable are firmly
plugged into both the wall outlet and the device.
If the AC power light still does not come on, check that the
wall outlet is working properly by plugging in a lamp or other
appliance.
The AC adaptor and power cord/cable work
correctly, but the battery will not charge.
The battery does not charge while the device is consuming
full power. Try turning off the device.
The battery may be too hot or too cold to charge properly. If
you think this is the probable cause, let the battery reach
room temperature and try again.
If the battery has completely discharged, it will not begin
charging immediately. Leave the AC adaptor and power
cord/cable connected, wait 20 minutes and see if the battery
is charging.
The battery appears not to power the device for as
long as it usually does.
If you frequently repeat shallow charge and discharge, the
battery meter may become inaccurate. Let the battery
discharge completely, then try charging it again.
NOTE