I use a box mod that is bit on the tight side in replacing batteries (14500). They've gotten a little mashed over recent weeks and this last weekend, the positive cap on one of my batteries became loose--kind of sliding across the top of the battery when I placed it in the mod or charger. Still works fine, takes a charge and lasts me through the day. Just wondering if I'm taking a risk using it and should I relegate it to the garbage bin or is it ok as long as it is performing properly.