Universal Power Group 12V 18AH SLA17-12 Compatible Sealed Lead Acid Battery with Nut and Bolt Terminal UPG # D5745 UB12180 12V 18Ah Dimensions: 7.15 inches x 3.06 inches x 6.60 inches. Weight: 11.40 Lbs SLA/AGM maintenance free, spill proof battery Rechargeable battery that can be mounted in any position, resists shocks and vibration 1 Year Warranty