TRIPP LITE SmartOnline SU750RTXL2U 750 VA 600 Watts 6 Outlets Expandable 2U Rack / Tower UPS System Outlets: 6 Battery Run Time: Full load runtime: 4 min. with internal batteries (600 watts) Half load runtime: 11 min. with internal batteies (300 watts) Battery Recharge Time: Less than 6 hours to 80% Series: SmartOnline Output Voltage: Maintains full-time sine wave output within 2% of selected nominal, less than 3% total harmonic distortion (linear load) / 6% total harmonic distortion (computer load) Outlet Type: NEMA 5-15R Alarms: Multi-function audible alarm with distinctive ring patterns offers notification of backup operation (2 seconds on/0.5 seconds off), low battery warning (1.25 seconds on/0.5 seconds off), overload (sounds continuously), UPS fault (4.2 seconds on/1 second off), input voltage out of frequency (2.1 seconds on/0.14 seconds off) and high input voltage (2.1 seconds on/0.07 seconds off...