u/AdZestyclose7522

so i have the led backpack that my ex gave me cuz when he got his nyan gear accidentally sent two somehow, and i also have the leg bag and the battery pack they sell. the battery works fine with my leg bag, but wont work for my backpack, like itll turn on but it wont connect. so i got another battery, also the nyan gear brand (prob shouldnt have) and same thing, backpack wont connect to bluetooth. does anyone else have this problem? and could it be the batteries just dont work that well or is the backpack itself possibly messed up?