My current UPS, a 1500VA rack-mount APC Smart-UPS SC is failing to take the load during minor power interruptions, so I am looking at possible replacements.
While UPS units have come down in price quite a bit, a replacement rack unit currently starts at around 4x the price of the entry-level tower units of equivalent capacity, and I am wondering is these are worth considering instead? They would in theory allow me to increase run time for less money.
I recall 15 years ago, I thought my boss was nuts getting the cheapest units he could find (I had an APC Back-UPS Pro at the time), and my position seemed to be justified when they failed during a minor power interruption, while other computers not connected to a UPS remained running.
A lot has changed since then however. Even the cheapest units now claim to be line interactive models, and I'm not at all happy with my current APC unit. It likely only needs a new battery, but given it has never told me I needed to replace the battery, and was a replacement (when new) for a unit that constantly complained about the battery needing replacing, I'm inclined to treat it as faulty. Both units came with a very long printout of test results, all of which indicated they passed.
With the above in mind, can anyone recommend tower units (1500-2000VA)?
My main requirement is to be able to change batteries without disconnecting everything. This isn't included in documentation for the reasonably priced Eaton 5E range, so I suspect it's not possible there.