Hi guys
I need some advice on our ACP UPS 5000. I think it’s over 6 years old and has 4 large batteries. Model is pretty similar to this
About a month back I had a warning light that the batteries were dead. I ran a battery test and the warning remained and felt it was reasonable given the age of the unit. Luckily I had some unused batteries in my server that were probably around 5 years old but were brand new out of the box. I powered everything down, installed them, powered everything back up had green lights and everything looked good. Now a couple of weeks later I have the warning light back telling me the batteries are dead again.
What should I do now? I realise 5 year old batteries are not ideal but the fact they were brand new I thought would give us some run time. Could it be the UPS itself? The load on the unit is barely half so...