The Fenton EA F1200, F1500 is a UPS system that requires a 12V 8Ah AGM replacement battery. The compatible Universal Power Group replacement is the UPG UB1280 12V 8AH F1 AGM Battery (UB1280F1), a 12V 8Ah AGM sealed lead-acid battery. This battery delivers up to 96 watts of standby power. It weighs 4.74 lb, uses F1 terminals, measures 5.94 L x 3.7 H in, and has left polarity. This is a direct drop-in replacement for the Fenton EA F1200, F1500 requiring no modification to the device.