The 53944 Re-battery is a battery pack manufactured by QOLTEC and is specifically designed for use in Uninterruptible Power Supplies (UPS). The battery pack is an Absorbed Glass Mat (AGM) battery that is maintenance-free and has 2V, 4V, and 8V outputs. It offers high discharge rates for quick start-up and a long life, with up to 500 recharge cycles and more than 10-year life expectancy. The battery also has various certifications including CE, RoHS, and VdS, making it ideal for all types of installations. The 53944 Re-Battery is extremely reliable and perfectly suited for frequent cycling and extended use.