Thanks, crackerjack. We are hoping to have some power here and there on this trip. Our battery didn't last long at Yellowstone. We would drop it off at the gas station daily to charge it ($16 or so per charge). We needed it for heat at night. Have asked if we need generator...but my other half says it would be cheaper to buy an extra battery. Y'all have a great trip. Sounds like you have almost as far to drive as we do!