UE Wonderboom 3 Battery dead and not charging

My UE Wonderboom recently died but wont charge anymore, I’ve tried multiple different chargers so I’m pretty certain its the Wonderboom’s battery which is the problem. I’ve seen a few different tricks such as putting it in the freezer for a while or plugging it in for just a few seconds over and over until it starts up. UE only suggests resetting the device but it needs to be on to do so which is absolutely no help. Does anyone have any suggestions? I cant find anyone who will repair a wonderboom speaker near me.