The CSB HR1227W (HR1227WF2 or HR1227W-FR for flame-retardant cases) is a 12 V high-rate sealed AGM battery, rated around 6.5 Ah, delivering 27 W in a 15-minute discharge test. It uses F2 ( 0.250" ) Faston tab terminals and features a durable ABS housing (optional UL94-V0 flame-retardant) The CSB HR1227W FR F2 is a High Rate series of battery designed to withstand the demands of hi-tech applications. This battery is perfect for alarm systems, ups systems, medical equipment, power systems and more. Compared to the competitors, CSB HR series offers 20% more high energy density output.