Finally got back to the job today, figured out that the replacement UPS units that were ordered (customer wanted new ones) were suppose to be a direct replacement, the rating is the same but the units overload and completely shut down when testing. Took the battery out of a new unit, installed in the old unit and tested, then found out that the microswitch in the mainline is wired wrong I think, elmcannic said to jump the microswitch so I tried that and everything worked.