ML4.5-4 SLA is a 4V 4.5AH Sealed Lead Acid (SLA) rechargeable maintenance free battery, Pack of 2 - UL Certified Dimensions: 1.89 inches x 1.89 inches x 4.25 inches. Terminal: F1. Listing is for the Battery only. No wire harness or mounting accessories included. SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures and long service life. Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures Full One Year Warranty Mighty Max Battery 4 Volt 4.5 Ah Sealed Lead Acid Battery for Fi-Shock SS-440 - 2 Pack