The storm last night performed a UPS test that was long over-due.
Unfortunately, the server UPS failed. One battery was 0V, and the other was 8.6V.
Both 7AH-12V batteries were replaced with new 9AH-12V batteries.
The old ones were the factory batteries, plut into service 2008-07-03 as per:
The UPS seems happy with the new batteries. They should provide a little longer run-time.
I’ll add a reminder to replace them in 5 years.