For low-power use I love the APC Back-UPS CS series. The design is 25+ years old and they still make them. IIRC the instruction leaflet in the box still shows Win98 which is good for a laugh.
They are cheap and simple and most importantly use a bog standard SLA battery I can find in my local battery shop. To the concern posted by the other gentleman, any battery shop will accept the old battery for recycling so no concern there. In fact they may charge extra if you don't bring the old one depending on your local laws. Make sure to get the USB version, it works flawlessly with apcupsd. CAVEAT EMPTOR: I use it with Linux primarily but have seen messages on the list indicating apcupsd USB HID should work fine on OpenBSD. Maybe someone else can confirm this. It's available in 120V & 230V versions depending on your region. https://www.se.com/uk/en/product/BK350EI/apc-backups-350va-210w-tower-230v-4x-iec-c13-outlets-user-replaceable-battery/ I had a lot of bad experiences with newer UPSs being cheap junk and impossible to service the batteries. I always end up coming back to these. Change the battery every few years and it will last forever. Regards Lloyd Lucas de Sena wrote: > Hi, > > I want to buy, for my home server, one of those "smart" UPS > (uninterruptible power supply, aka "no-break") that connects to the > computer via USB and asks the system to gracefully shut itself down > on a power outage when its battery gets low. > > Have you used any of those devices on OpenBSD? > Can you share your experience with it? > > My requirements are: > - Must (obviously) work on OpenBSD either on a base system or with > sysutils/apcupsd (or any other port). > - Must gracefully shut OpenBSD down on power outage. > - Small scale/low cost. I do not want to back up a racked server or > anything big... My home server is just a repurposed laptop with > broken screen and no battery that's connected on AC 24/7. > - I do not care about battery capacity. Being able to shutdown the > system on a power outage is more important than keeping it powered > for a long time. > - Optionally, can be monitored via sensorsd. That's not actually > essential, tho. But is good to have. > > Thanks. > >

