2 X ULTRAMAX Pride Mobility Quantum 600 Q600 12V 55Ah Scooter Replacement Battry
(12V 55 Ah). Low pressure relief valve. AGM, DEEP CYCLE BATTERIES. Fully Sealed (cannot spill) - Rechargable - Deep Cycle battery. Weight 19 Kg. For standby power this range has a nominal 5 - 8 year life.