The battery is not charged (Charging is never completed).
This may be due to the high temperature of the device, or insufficient electricity supply from the USB port. Try one of the following methods to solve the problem:
- Charge the battery with the scanner cover closed.
- Make sure the electricity supply of your USB port is sufficient. Does it comply with the USB standard (5 V 500 mA)?
- Use the bundled USB cable to connect to the computer directly. An extension cable or USB hub may not provide sufficient amount of electric power.
- Use the adaptor that is sold separately to charge the battery.