If the board can't be charged, then you need to check it out step by step.
1. Is the charger light turns green when only plugging into the wall (not connect to the board)
2. Does the indicator show the “in” charging symbol while the plug charger in?
3. Open the battery case and check all wires' connection, if any wire is loosened or fallen.
4. if there is nothing wrong after you did the above steps, then you need to charge the battery directly by using the charging port adaptor, here is the video to show you how to do. ( skip over the indicator screen)
(If the charger light is red, means it is charging normally.)