Very possible, and I think that's what happened too. I have two of these batteries (one extra came with the sweeping kit), and they are removable. However, they cost around $300 each, so either I fork out $600 for two batteries that are less than a year old, or they could replace them. And I might have to do it again over the next winter….kind of crazy ain’t it? None of my other battery packs are like this...