Hi there, after a couple of years, my Active2 40mm battery barely lasts 1 day. I'm thinking of changing it. Of course, I know that I should go for the 40mm battery. But before doing so, I just need to ask if anyone has tried to squeeze in the 44mm battery model in the 40mm? Is there any space for it? I know it's a dumb question, and probably there is no space, otherwise, the brand would have done it. Nevertheless, brands have made mistakes before...

Thanks