APC Back-UPS 850VA, 2 USB charging ports, 120V

Output power capacity 450Watts / 850VA Max Configurable Power (Watts) 450Watts / 850VA Nominal Output Voltage 120V Output Frequency (sync to mains) 50/60Hz +/- 3 Hz Topology Standby Waveform type Stepped approximation to a sinewave Output Connections (3) NEMA 5-15R (selector_surgetitle) (6) NEMA 5-15R (Battery Backup) Transfer Time 6ms typical : 10ms maximum