That same article makes reference to the fru_led command, which doesn't seem to exist on this platform/version, even in admin or diag priv mode. I poked around in the service processor to find clues. "system sensors" doesn't show anything different. "system fru show 8" gives me some general info on the battery, but nothing significant. "system fru show" gives a usage of "led set <FRU-LED-ID> <'on'|'off'> - Set FRU LED state. I thought maybe I could use that to manually turn off the LED, but I tried to play around with that syntax, "system fru led set 8 off" for example, but that doesn't do anything. Doesn't appear to be good syntax.
Anyway, this thing is end of life/end of support, but just hoping someone might have some insight. I did a clean halt and reboot, hoping it would reset/clear the LED, but no luck. Bottom line, I don't see anything that appears wrong. But just not sure if this LED being on is an indication of something broken I'm just not seeing. Any insight/guidance appreciated. Thanks.