I did a job for some friends this evening at a small dental practice replacing a server computer. I removed the "old server" and its "UPS" and had a big laugh. The alleged UPS, one of those APC "power strip with a battery" models (a Back-UPS ES 650), was providing standby power for the old server computer, or rather, was supposed to be.
When I pulled the UPS out from under the desk, I found the factory-applied bright yellow sticker advising the user to connect the battery still intact and firmly covering all the battery-backed outlets. The server computer had been plugged into the outlets labeled "Surge Protection Only" for the 5+ years that it was in production use.