IsolationRide,

My post wasn't correct..you indicated cranking amps or CA. My reference was to cold cranking amps or CCA. I think CA is measured at 32&deg. The point I was trying to make is that lots of electrical do-dads will impact the system as the rig runs, which is charging system territory.

The oink in the battery is relevant to spinning the engine over during a start...basically.

Stuart