hover won't chager are cut off

hover won't chager are cut off

so like one day i went inside my hoverboard to change my bluethooth peice and then it wont turn off so yea a cousre i put my old bluethoot piece back in and it still would cut off so then it was able to still ride it it was beeping while i was riding it so i road it till it was dead then when it went dead i open it up and took everything a loose but still didn't work so now i need to know how to fix it cause i very mad so can someone help me please.