Ultramax NPG45-12, 12v 45Ah Sealed GEL - AGM - VRLA Battery. DIMENSIONS: L 197mm x W 165mm x H 170mm including terminals. Number of batteries required for full replacement: 2 Gel Batteries are best used in VERY DEEP cycle application and may last a bit longer in hot weather applications. TOTALLY MAINTENANCE FREE; SUPERIOR DEEP CYCLE LIFE WHEN COMPARED TO AGM BATTERIES; MAY OPERATE IN ANY POSITION; BETTER SUITED FOR LONG DURATION DISCHARGES; SUPERIOR SHELF LIFE WHEN COMPARED TO WET CELL BATTERIES Fitted to various Golf Buggies, Mobility Scooter, Wheelchairs, UPS, Lawn Mowers, Lights, Toy cars, Sprayers, Photovoltaics, Robots, Communications, Electric tools, Pumps, Measuring instruments, AGV (Automatic guided vehicle), Magnetic Lifts and many more Voltage: 12V (12 Volts); Capacity: 45Ah (45000mAh); Terminals: Bolt; Chemistry: Sealed GEL (AGM); Weight: 14.5 kg each