I really don't see anything wrong here that would explains the status of your controller/battery. Did you install these servers with the 5.1 U1 HP ISO?
Have you tried resetting sensors and updating info in the Hardware status tab?
You can update the p420i firmware to 3.54 btw, but I doubt it matters in this case:
http://www.hp.com/swpublishing/MTX-73544a7eae7b47aebde3d43402
Parse the swfw output like this:
grep SMX_SAFirmware -A20 /tmp/swfw