On Wed, 21 Oct 2026 00:22:30 -0300 Lucas de Sena <[email protected]> wrote:
> anything big... My home server is just a repurposed laptop with > broken screen and no battery that's connected on AC 24/7. For that specific case you might want to search for a replacement laptop battery. And then monitor the sensor status for shutdown. That should be way cheaper than any external device. I have several UPS in use (APC, Eaton, CyberPower, PowerWalker) for <= 2kW use cases. Not much difference between those suppliers in practice; if you are unlucky the electronics fail and you have to scrap the device, otherwise they just run for years. Two examples that work with OpenBSD: *) APC SmartUPS 2200i addr 02: 051d:0003 American Power Conversion, Smart-UPS 2200 FW:COM 02.1 / UPS.05.I *) Eaton 9E1000I addr 02: 0463:ffff EATON, Eaton 9E Just make sure the UPS has a replaceable battery (required every 4-5 years), and all those should also have at least USB for monitoring. Given firmware quality/security of embedded devices in general, I would avoid connecting them to a network. Strong recommendation for at least line-interactive designs [1]; avoid (cheap) offline designs. It is not just power outages you need to prepare for; your power line might fluctuate just for a second, and that can kill the electronic/PSU of the downstream devices. It is not flawless, but online conversion is too expensive in this power/price range. [1] https://en.wikipedia.org/wiki/Uninterruptible_power_supply#Line-interactive /Robert
