APC BACK-UPS BE800VA 230V Reserves power capacity and run time for connected equipment that require UPS battery back-up while providing surge only protection for less critical equipment, Provides temporary battery power when the utility power is out. Periodic battery self-test ensures early detection of a battery that needs to be replaced. Provides notification of changing utility power and UPS power conditions, Increases availability by allowing a trained user to perform upgrades and replacements of the batteries reducing Mean Time to Repair, Provides management of the UPS via a USB port (not available on all models). Gives higher application availability by correcting low and high voltage conditions without using the battery (not available on all models). Quickly understand unit and power status with visual indicators.