Following the discovery of a DAQ-Test-Stand computer with a dead internal motherboard battery, I scanned the H1 production machines this morning to check their battery status (following Mike T's instructions).
All 28 computers with an active IPMI port reported a good voltage on their 3V battery. The IPMI interface for h1lsc0 (the most recent machine to be upgraded to a Generation-2 computer) is not functional. When we upgrade to Gentoo-3.0.8 the ipmitool command for front ends becomes available so I will be able to set the IPMI configuration without having to resort to BIOS. Since h1lsc0 is a new machine, we can assume its battery is as good or better than h1suse[x,y]
Full listing is shown below. Note that if you round to one decimal place, they are all at 3.2V except for h1suse[x,y] which are at 3.5V. This is expected, all the Generation-1 machines are the same age, the end station SUS are recent Generation-2 machines.
h1psl0 VBAT | 3.192 Volts
h1seih16 VBAT | 3.192 Volts
h1seih23 VBAT | 3.192 Volts
h1seih45 VBAT | 3.192 Volts
h1seib1 VBAT | 3.216 Volts
h1seib2 VBAT | 3.216 Volts
h1seib3 VBAT | 3.216 Volts
h1sush2a VBAT | 3.192 Volts
h1sush2b VBAT | 3.216 Volts
h1sush34 VBAT | 3.192 Volts
h1sush56 VBAT | 3.216 Volts
h1susb123 VBAT | 3.192 Volts
h1susauxh2 VBAT | 3.216 Volts
h1susauxh34 VBAT | 3.216 Volts
h1susauxh56 VBAT | 3.192 Volts
h1susauxb123 VBAT | 3.216 Volts
h1oaf0 VBAT | 3.192 Volts
h1asc0 VBAT | 3.192 Volts
h1pemmx VBAT | 3.192 Volts
h1pemmy VBAT | 3.216 Volts
h1susauxey VBAT | 3.192 Volts
h1susey VBAT | 3.472 Volts
h1seiey VBAT | 3.216 Volts
h1iscey VBAT | 3.168 Volts
h1susauxex VBAT | 3.192 Volts
h1susex VBAT | 3.456 Volts
h1seiex VBAT | 3.192 Volts
h1iscex VBAT | 3.192 Volts