Brand New Genuine Ultra Max 12v 40Ah Maintenance Free Gel Battery 12volt 40 AmpHour (12V 40Ah) AGM, DEEP CYCLE BATTERIES, MAINTENANCE FREE SEALED GEL CELL BATTERY Gel Batteries are best used in VERY DEEP cycle application and may last a bit longer in hot weather applications. GEL BATTERY 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. These Batteries are the same Dimensions & replace 38Ah, 42Ah, 44Ah, 45Ah. ULTRA MAX CODE: NPG40-12. ALL OUR BATTERIES CARRY A FULL 12 MONTH WARRANTY DIMENSIONS: L 197mm x W 165mm x H 170mm inc posts Fully Sealed (cannot spill) .