6V 4.5AH SLA Battery replaces elb06042 es4-6 ps-640 gp640 - 15 Pack UPG #D5733 UB645 6V 4.5Ah. Pack of 15 Dimensions: 2.78 inches x 1.88 inches x 4.18 inches. Weight: 1.59 Lbs SLA/AGM maintenance free, spill proof battery Rechargeable battery that can be mounted in any position, resists shocks and vibration 1 Year Warranty