The Best Power Technologies SLA12550 is a UPS system that requires a 12V 55Ah AGM replacement battery. The compatible Universal Power Group replacement is the UPG UB12550 12V 55AH (+ on left) Z1 AGM Battery Group 22nf (UB12550), a 12V 55Ah AGM sealed lead-acid battery. This battery delivers up to 660 watts of standby power. It weighs 35.5 lb, uses Z1 terminals, measures 9.06 L x 8.27 H in, and has left polarity. This is a direct drop-in replacement for the Best Power Technologies SLA12550 requiring no modification to the device.
