New to this and have only flown my Mavic 2 Pro a few times. Last time I flew it into a treetop and it crashed. I left the battery in it and was sitting around a little while later when I heard the drone turn on and the lights came on. I turned it off but foolishly left the battery in overnight. A few days later I received the right rear arm and propeller that broke during the crash and tried charging the battery with the wall charger while I went about replacing the broken arm and motor. Apparently the thing turned again overnight and drained the battery. An hour later there are no lights coming on on the battery and it appears completely unresponsive. Any suggestions? Thanks in advance for any help.