BenQ Joybook S33 Series User Manual page 63

The battery indicator on my Joybook suggests that the battery is
fully charged. However, when I check it from the Power
Manager in Windows, the battery level is only about 95%-99%.
Why?
It is the result of the battery protection design of your Joybook.
When the battery indicator on your Joybook goes off, it means
that the battery has reached a saturated voltage: 95%~99%. At
this moment, the voltage difference detected by your Joybook is
very small, so it will reduce the charging current to prevent
overcharging the battery with excess current or voltage, which
will damage the battery. Moreover, in order to protect the
battery from exposing to high voltage and current for a long
time during charging, the battery has been equipped with a
protection circuit that will charge the battery at low current in
the final phase.
How come my notebook is not fully charged even after a full
night charge?
Make sure the Joybook is receiving power. Is the power cord
plugged in correctly? If the battery is installed in the Joybook
and it is properly connected to an AC outlet, check if the battery
meter icon is showing a charge sign. If this does not fix the
problem, then the battery, the power source in your Joybook, or
the AC power cord may be defective. Consult your BenQ dealer
for help and maintenance.
What should I do if the battery gets hot in my Joybook?
Take the battery out and let it cool down for a while. If the
problem persists when the battery is inserted again into your
Joybook later, the battery could be defective and it may need to
be replaced. Consult your BenQ dealer for help and
maintenance.
I have pressed the Power button, but my Joybook cannot start
up.
Check the Power button indicator.
• If it is not lit up, your Joybook is not being supplied by power,
either from an external power source via the power adapter or
from the battery pack. Make sure you have connected the
power adapter correctly to the power socket of your Joybook
and a working electrical outlet, so the battery can start
charging.
• If the Power button indicator lights up in amber, the
Joybook is being supplied normally with power,
meaning that the problem lies elsewhere.
• If you have added any hardware, such as a memory
module, check if it has been installed correctly.
• It is possible that certain operating system files are
damaged or missing. If so, you may need to back up all
your data first, and then recover your system. Refer to
"Recovering your system using QDataTrove" on page
45 for details.
Why does the battery on my Joybook seem to last shorter and
shorter?
It is normal for Lithium-ion (Li-ion) batteries to decline in
capacity over time.
FAQ and troubleshooting 59