AGM-Acid Valve-Regulated Lead Acid battery Front terminal design suited for 19”21” cabinet Strong handles for easy operation Patent Terminal sealing & front access Self-regulating pressure relief valve with flame arrester Terminal cover for insulation with flexible access Flame retardant ABS case (UL94 V-0, optional) Centralized H2 gas vent kit Low self-discharge rate Comply with IEC, IEEE, UL, EN, CE standards, etc. Design life at 25°C (77°F): 12+ years 
