TRIPP LITE SmartOnline SU20K3/3 20000 VA 16000 Watts Hardwire Outlets 3-Phase UPS Systems Outlets: Hardwire Battery Run Time: Full load runtime: Included internal batteries: 5 min. (16,000 watts). Runtime can be extended with additional internal battery packs (model # SURBC2030). Half load runtime: Included internal batteries: 17 min. (8,000 watts). Runtime can be extended with additional internal battery packs (model # SURBC2030). Battery Recharge Time: 2 - 4 hours to 90% Series: SmartOnline Input Voltage Range: 120/208V AC (3-Phase, 4 Wire, wye) Output Voltage: 120Vac +/- 5% Approvals: UL (USA), cUL (Canada), NOM (Mexico), Class A (Emissions) Surge Energy Rating: 480 Joules