Jack Shirley wrote:
Mine might be dated experience, Pete, but we once (late 90s) had a bunch of similarly named units from TrippLite and they used a relay to step around the the input voltage. They were horrible.
We're getting units nowadays that will handle a window like 100-280 incoming without using physical relays and xfmr taps.
I had one installed to operate a cable modem & router. There was no indication that the battery was going bad... I did a routine check of it and found it so hot that the battery had melted down and actually fused to the side of the plastic case... I scrapped it and never replaced...
I serviced quite few of these power conditioners when I was working. They had a trickle charge and high charge available for the on-board LA battery. They could detect a 1/4 cycle dropout and replace the wave from the battery. However, batteries had to be replaced every two to three years.