The Minuteman Endeavor ED2000RM2U 2000VA Tower/Rack Mountable on-line uninterruptible power supply combines double-conversion technology with industry-leading features in a versatile case design that allows the units to be installed in many different formats and environments. In developing one of the best-valued, highest quality UPS products on the market, the Endeavor has these standard features.Up to a 0.8 power factor (in watts) for larger capacitiesOutput receptacle control for non-critical load shedding capabilityExtended runtime using external battery packsIndependent battery pack chargers to reduce battery recharge times