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5. Power management features.
5.1. Battery low warning.
When the PLEXTALK is operating on battery power and the power
level drops to a level where it needs to be recharged, the PLEXTALK
will say "Low battery." Player will shut down in one minute. If you
wish to continue to use the PLEXTALK, you need to plug in the AC
adaptor.
5.2. Automatic power off function.
In order to save battery power, the PLEXTALK will automatically shut
down after 15 minutes of inactivity even if the battery level is still OK.
Note: PLEXTALK will not automatically shut down if it is running on
mains power.
5.3. Compulsory power off function.
If for any reason, PLEXTALK will not shut down or you are not able to
navigate with any keys, you can try using the compulsory power off
function, as an alternative to remove the battery.
To use the compulsory power off feature, press and hold down the
Sleep timer key and Power button together for more than 10 seconds.
PLEXTALK should shut down.
Note: If this method does not work, and your PLEXTALK is still
powered on, you should plug off the AC adaptor, remove the battery
and insert the battery again.