Two screws and it pops off. I replaced my battery with a lithium iron battery (car version of lithium ion). Expensive but super light weight and it has twice the amp hours of the original battery and it still nearly half the size. I have the extra juice on colder starts and it has a longer warranty than 3 years... about 7 I think. I also recommend getting a trickle charger for scooter batteries. Easy to add with the 2 screws off and will prevent the battery from prematurely wearing out.