Expands runtime and quickly restores full backup power with Fast Charge Technology BATTERY EQUALIZATION TECHNOLOGY (BET): an advanced charging process that maintains the voltages of the batteries at the same level to increase battery life 2U Rack/Tower Convertible Form Factor - Compatible with the following Smart App Sinewave UPS systems: PR2200RTXL2UAN, PR3000RTXL2UAN, PR2200RTXL2UHVAN, PR3000RTXL2UHVAN Can be replaced without powering down vital equipment and toolless battery panel access makes battery replacement fast and simple