As far as battery chemistry, SLAB is a cost tradeoff against your "threats". Our threat is midwestern storms in the spring that cause power interruptions. These

As far as battery chemistry, SLAB is a cost tradeoff against your "threats". Our threat is midwestern storms in the spring that cause power interruptions. These are usually momentary (10s) or 30m or less. Anything longer and we'd send people home for the day. Preventing a network reboot during those momentary outages is the goal. Extended runtime just isn't needed, but a decently sized UPS can power one our typical floor racks for about 2-4 hours. We're likely only going to ever deploy SLAB because it's so danged cheap for something thats only used a handful a times a year. I've found that Eaton UPSs pretty much knock out a lot of the concerns listed. I've got 9 of them deployed for floor/closet racks and a raspberry pi to interrogate the UPS with Telegraf, and those are shipped to an InfluxDB instance. Back in the day we would have used SNMP, but that isn't cool anymore... I also have recently deployed a few over the higher end Cyberpower UPSs to see how they do long term (these are a little bit of a meme brand it seems like). That all being said, the lower end Eaton UPSs do not have a way to "Remote Test" (basically they lack a relay to isolate from mains and take the load onto battery). Higher end UPSs can do these commands over USB. One of the help desk tasks is once a quarter, visit each UPS and yank the power for 2m while Telegraf measures the battery drain stats. Not a huge problem, but a mundane task.