This universal 6V, 4.5A Lithium Ion battery is your perfect replacement battery for wide variety of applications, from alarms, to medical devices. Weighing 50% less than your traditional sealed lead acid battery, this lithium ion battery provides 4,000 charge cycles, a 4-LED charge indicator, an IP54 rating, and only a 4 hour charge time. All our Lithium Ion batteries feature LiFEPO4 cells that are UL listed and safe for transport. If you’re replacing your 6V batteries every 6 months, you’ll love how long our batteries will last you. With 4,000 charge cycle life you may never have to replace them!