Just reboot the system and hit the Pause key during POST. The system will sit frozen at the BIOS screen drawing power and then you can pull A/C power out of the wall. It the UPS dies no problem.
Ted -----Original Message----- From: PLUG <plug-boun...@lists.pdxlinux.org> On Behalf Of American Citizen Sent: Saturday, January 27, 2024 12:40 PM To: 'Portland Linux/Unix Group' <plug@lists.pdxlinux.org> Subject: [PLUG] what is the best way to check an UPS unit for real battery capacity? Hello Is there any way to check for battery capacity of the UPS unit without having to switch off the AC power input? Just curious if anyway while the UPS stays online can be done? Once I got caught with practically useless battery capacity (lead-acid cells) on an APC unit, because I had neglected to check the batteries capacity about once a year or so. I get a bit nervous when killing the AC power on a live system, although that's what the UPS is supposed to protect from. Is the best way to check done by killing the AC power? Randall
