12V 8Ah UPS Battery Replacement for APC Back-UPS ES BE550GML8-12 SLA is a 12V 8AH Sealed Lead Acid (SLA) rechargeable maintenance free batteryDimensions: 5.94 inches x 2.56 inches x 3.94 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, long service life and deep discharge recover.