u/No_Mechanic_4595

I'm looking for some troubleshooting and diagnosing advice on my XRV kit. A few months ago I nosedived while going up a steep hill. Afterwards I got on floaty and went up the same hill and I watched my battery voltage drop dramatically as I went up the hill. When I rode on a flat road or went downhill my voltage rose back to a normal level. Fast forward a few weeks, I have been riding the board around on flat ground with out issue. I turn my board on this morning and it won't balance and makes some strange noises. I plug it into the charger and the charger just blinks green. When I get on floaty to check voltage it is a 0% battery and around 20v. Any ideas on what to do or what to check?