So this is part of the battery?
I'm still waiting on my parts being shipped "ASAP" - my expectations are low. BUT, I've noticed that if I take it off charge at night, I can usually get it to turn on ONCE in the morning. I've been getting my shoes and helmet on and most the time tap the power button first thing and it comes on. I can do my usual 15-20 mile ride so long as I don't turn it off. When I get home, if I turn it off, it won't come back on again until the next day. So, I'm getting some use out of it, but obviously, I still can't head out anywhere besides the trail near my home. The idea of course is to take adventures and be able to stop along the way.
But, heat seems like a possibility. Of course, a battery is NOT one of the parts on the way. I HATE this guessing at what it is and just replacing parts, never knowing if I'm really good to go.