About a week ago I noticed my miev did not charged in full. It charged up to 80% before the level 1 charger will turn off on its own. At first I sort of ignore the problem, I thought it was time to replace the charger but, now, ii am starting to worry. It looks like the problem is more serious than just replacing the charger. Now, a week later, the battery is only charging up to 50% and Electric Motor Warning light is coming on now and then. Looking for help here before I start digging with no clue... Any help will be greatly appreciated. Thanks!