High online efficiency reduces utlility costs, generates less heat. Green mode bypasses unused electrical components in good power conditions to achieve very high operating efficiency without sacrificing any protection. Energy meter provides actual kilowatt hours of usage for energy conscious users. Predictive replace battery date dynamically provides the month and year when battery replacement is recommended to aide in long term maintenance planning. Intuitive LCD interface provides clear and accurate information in multiple languages with the ability to configure the UPS locally with easy to use navigation keys.