F&H UNF Series VRLA batteries has been specially designed for use in telecom systems. With front access terminals, it's easy for installing and taking voltage readings during service. It offer high reliability and deliver superior performance while occupying less space and increasing energy density. The battery container and cover made from V0 class flame retardant ABS & with thick walls, offer the battery with high mechanical strength and safety service features. Features&Benefits Capacity: 50 - 180 Ah Design Life: 10 years 25oC(77oF) Very High energy density UL recognized Lower Self Discharge Longest Available Standby Life Approved for shipping as non-hazardous, non-spillable Operates in any position