Given when you actually bought that saber, your warranty period is ending noticeably sooner than if you had ordered it just in time for Christmas. Having reminded you of that (probably needlessly), I’d suggest dealing with the battery removal annoyance for a couple of weeks, then sending it in for repairs.
It’s not the best situation, but it’s a suggestion.
Yeah, you're probably right. It's my 18 year old's and he's usually pretty chill about this kind of thing. I'll talk with him about it and see what he says, then I'll contact Ultrasabers about it and see what happens.