“I’ve had a couple APC battery back ups, but not much luck with them. One kept going off with nary a flicker of anything else and the other just quit.”
My guess would be that the seller sold to you a unit that had already been sitting on the shelf for a lengthy period of time and the battery was almost already dead.
We have a store called Batteries Plus....maybe I can take the APC there and have a new, really new, battery put in it and see what happens.
I must retire...I keep falling asleep.
Good night/morning, spel. ((HUGS))