Battery-protected and surge-only outlets reserves power capacity and run time for connected equipment that require battery back-up. Boost Automatic Voltage Regulation preserves battery life and maximizes runtime by correcting low voltages without discharging the battery. Audible alarms provide notification of changing utility power and UPS conditions. Power conditioning protects connected loads from surges, spikes, lightning, and other disturbances. Battery replacement without tools reduces risk of load disruption. Automatic battery self-test ensures early detection of a battery that needs to be replaced. System VA: 500 VA; Backup Time at Full Load: 300 Watts @ 4.3 minutes; Backup Time at Half Load: 150 Watts @ 15.6 minutes; Automatic Voltage Regulation (AVR): Yes.