Dalton Dalton UPS 650VA – Power Backup for Home Appliances and Computers

UPS 650VA/390W  
UPS:

Part 1: Converts alternating current to direct current. Part 2: Uses direct current to charge a number of batteries. Part 3: Converts direct current from the battery to alternating current.
When the power supply to the loads is cut off, the UPS will continue to supply the loads from the battery, but for a limited period determined by the battery capacity and the amount of current drawn from it.