For the Replacement Battery please see Quick find 85520. SB connection: use your PC to access additional power protection and management features for your UPS via a USB port Telephone dataline surge protection: provides protection of connected equipment from power surges traveling on telephone lines Automatic Voltage Regulation (AVR):automatically steps up low voltage and steps down high voltage to levels that are suitable for your equipment. Resettable circuit breaker: easy recovery from overloads; no need to replace a fuse Automatic restart of loads after UPS shutdown: automatically starts up the connected equipment upon the return of utility power Automatic self-test: periodic battery self-test ensures early detection of a battery that needs to be replaced