Enertion Raptor Electric Skateboard needs battery

I havent used this in 4 years and is sitting in the shed. It’s charging and red light but battery is not holding charge. Comes with bluetooth handheld contoller, charger, a set of offroad tyres, which are currently on it and the original tyres. Also other parts included, second deck, brand new battery casing, handles, brand new enertion controller, 2 chargers, and some other bits and bobs. No offers- 250 to clear as is paid 1700 originally from Voltes