OPTI-UPS VS375C Standby Series 6-Outlet Uninterruptible Power Supply (225W, 375VA, Beige) 6-outlet uninterruptible power supply Maximum capacity: 375VA, 225 Watts 3 NEMA 5-15R battery backup outlets, and 3 NEMA 5-15R surge protected outlets Surge energy rating: 1050 Joules 7.2 minutes of battery backup at half load, and 1.5 minutes at full load