Hi, I just recently upgraded my bikes motor and battery to a 72v 20ah 3000w battery. The battery and motor works great and I’m getting the output I was looking from it, on the other hand I’m having an issue with charging it. When the charger is plugged into the wall without the bike connected I get a solid green light, when plugged into the bike I get a flashing green light and the battery hasn’t increased in charge as well. Is there something I’m doing wrong or missing here?