APC BE650BB 8-Outlet Uninterruptible Power Supply (Discontinued by Manufacturer) Standalone uninterruptible power supply 390-Watt, 650VA output capacity 2 NEMA 5-15R surge protected outlets and 2 NEMA 5-15R battery backup outlets 17.1 minute backup time at half-load, 5.8 minutes at full load 365 joules of surge energy protection