APC Back UPS BE850G2 AC 230 V 520 Watts 850 VA 8 Output Connectors Battery backup and surge protector for electronics and computers. Includes user manual. Adjustable voltage sensitivity provides the ability to adapt the UPS for optimal performance in specific power environments or generator applications. Periodic battery self-test ensures early detection of a battery that needs to be replaced and battery charging indicator lets you know when your battery is charging and when it is fully charged.Please note this item is non-returnable, see our returns policy for more information.