I thought a deep cycle battery was for deep cycles. A deep cycle is when you drain the battery dead, or near dead, and then recharge it.

I would think that our application is the exact opposite. Since we don't even use the 12v for starting, we hardly drain it at all. We use just a little bit of power from the battery initially for some electronics, and then recharge it.

Actually, what we might really need is some sort of NiMH or Lithium based 12v battery. Some technology that might be better suited for light draws and constant recharging?

Best single LD trip: 35.3mpg