Replacing the Battery in a 1st Generation Back-UPS Pro
... battery for the Back - UPS Pro 280, 420 and 650 VA Models Back - UPS Pro 280, 420 and 650 VA The UPS performs a self ... ... test, the UPS briefly operates the ... If the UPS passes the self ... If the UPS fails the self ... ... may leave the UPS and loads on ... ... . Lay the UPS on its left ... ... battery to the UPS . ... while pulling straight back from the battery ... 5. Replace the new battery in the UPS . ... 6 . Dispose of the old battery properly at an appropriate facility or return it to the supplier in the packing material for the new battery.