The new Liebert® EXL™ is a monolithic product that features a transformer-free design with a full IGBT three-level topology, providing extraordinary features including a double conversion efficiency of up to 97% plus intelligent paralleling to optimize efficiency at partial load, thus achieving superior running cost savings as well as reduced TCO and CO2 emissions. Liebert EXL can operate with both standard VRLA and new Li-ion batteries thus adapting to all possible requirements in terms of runtime, life expectancy and TCO, and showing extreme flexibility.