Description of APC Smart-UPS 3000VA - Black [SUA3000i] USB connectivity provides management of the UPS via a USB port. Filtering, Suppression and Regulation full time multi-pole noise filtering : 0.3%. Battery Type is maintenance free sealed Lead-Acid battery with suspended electrolyte. Power conditioning protects connected loads from surges, spikes, lightning, and other power disturbances. Automatic self-test is periodic battery self-test ensures early detection of a battery that needs to be replaced Topology: Line Interactive Waveform Type: Sine wave Output Voltage Note: Configurable for 220 : 230 or 240 nominal output voltage Battery Type: Maintenance-free sealed Lead-Acid battery with suspended electrolyte Typical Recharge Time: 3 hour Audible Alarm: Alarm when on battery distinctive, low battery alarm configurable delays Output Voltage Distortion Less than 5% at full load