The Drive Sunfire Plus EC power chair gets its "go-juice" from a powerful pair of dependable 12 volt 25 Ah U1 batteries. These batteries keep their charge by way of a 24 volt 4 amp onboard battery charger.
Monster Scooter Parts has the very best batteries and charger, as well as armrests, motors, and much more for the Drive Sunfire Plus EC power chair.