littlebaler, I was hoping someone with more experience would come along to help with your question. It's quite possible that the electrical system posted an error code with the ECM regarding low voltage with the starting battery. If the light went out after the battery was charged, it may have been your problem.
The error codes are captured, and if you do go by a FL or Cummins dealer, they should be able to recall the error code and tell you what it was.
If the light is out and doesn't come on again, I wouldn't worry about it.
'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX