Universal Power Group UB12180 12V 18AH SLA Internal Thread Battery for Generac 7500 EXL Generator UPG # 45570 UB12180INT 12V 18Ah Dimensions: 7.13 inches x 3.01 inches x 6.57 inches. Weight: 11.90 Lbs SLA/AGM maintenance free, spill proof battery Rechargeable battery that can be mounted in any position, resists shocks and vibration 1 Year Warranty