Update: New charger indeed didn't work. The company contacted me through email and despatched a new battery port along with a charger. We've installed it and it really is working however it didn't arrive with the rubber caulking that the first just one experienced to carry everything in position https://www.electricscooter.ltd/adult-electric-scooters-10000w-fast-e-scooter-with-hydraulic-brakes/