1, it may be that the components of the juice cup control board contact liquid or damp, this situation is easy to lead to short circuit, charging will not be filled, you can repair the control board.
2, it is also possible that the plug of the juice cup is damaged, and a plug can be replaced.
3, there may be juice cup motor damage, repair the motor can be.
Yes, the battery is dead! Like electric cars, long-term battery loss