Originally Posted by
LTNman
I used to install UPS's (uninterruptible power supplies) as part of my job that guaranteed power for a set time. Years later we would go back when they failed to operate as the batteries that were on a constant trickle charge had a limited life and that no one had thought about changing them.
????? I don't see what use a UPS is if it doesn't monitor itself, surely it will have reported that it needed a new battery even if the bureaucratic systems for maintaining it failed???