12V 55AH Battery Replacement for MK M22NFSLDG - 2 Pack UPG # 40740 UB12550 12V 55Ah. Pack of 2 Dimensions: 9.06 inches x 5.44 inches x 9.13 inches. Weight: 38.60 Lbs SLA/AGM maintenance free, spill proof battery Rechargeable battery that can be mounted in any position, resists shocks and vibration 1 Year Warranty