Mighty Max Battery 12v 18AH SLA Battery for X-Treme X-50-500 Electric Cooler - 2 Pack Brand Product ML18-12 SLA is a 12V 18AH Sealed Lead Acid (SLA) rechargeable maintenance free battery. Pack of 2 Dimensions: 7.13 inches x 3.01 inches x 6.57 inches. Terminal: Nut and Bolt. Listing is for the Battery and Screws only. No wire harness or mounting accessories included. SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures, long service life and deep discharge recover. Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures. Backed by a 30 day refund policy and full 1 year warranty.