SMART500RT1U Estimated Runtime Load in Watts UPS 20W 40W 60W 80W 100W 120W 140W 160W 180W 200W 260W 300W SMART500RT1U 71 37 24 17 13 10 8.5 7.2 6.2 5.3 3.6 3.0 All runtime values are in minutes.