Lithium-ion batteries last twice as long or longer than traditional VRLA batteries Offers low total cost of ownership with fewer or no battery replacements over its lifetime Five-year standard warranty on UPS and batteries 1920VA UPS offers longer runtime with up to 8.6 minutes at full-load and 19.0 minutes at half-load 100% capacity in 2.1 hours in this rack UPS with faster recharges