It is ok having the battery connected forever to the USB port, the internal charger will stop and start the
charge when needed.
If your USB port is unpowered it may not be capable of delivering more than 100mA; the battery may not be
charged at all. If you have no other option available than a 100mA USB port, set the LCD backlight to OFF in
the OPTIONS MENU and keep charging for as long as needed (it may take up to 24hs in these conditions so
you should use a powered USB port whenever possible).
Using the Battery dedicated screen
In latest firmware versions, you can use the specific Battery menu option for better battery charge control.
Note: As long as the USB is connected and the power switch is in the ON position, the battery will charge.
However, you can get additional information when using the Battery specific menu.
Inside this INTERNAL BATTERY charger screen, it is easier to realize if the battery is being charged. In this
case below, it clearly indicates the power switch is not in the ON position and, therefore, battery is not being
charged.
As soon as the power switch is set to the correct position, the screen will display correct charging status.
At this point you can close this screen pressing ENTER or RETURN. If you keep it active for more than 15
seconds, it automatically sets the device in SLEEP MODE - all internal circuits and LCD backlight go off, except
for charging and minimal CPU monitoring - This is the recommended procedure to charge the device
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