My biggest fear is having the battery go out when I am in the middle of the woods. So I have a Trickle Charger that seems to keep the battery happy. I put it on the dashboard and plug into lighter receptacle and leave it until I have to move. But, like a person with belt and suspenders, I have a hand held item, the JumPack XL – Jump Starter/Power Pack that can start engines. This has saved several people who’s batteries died. I bought mine 4 years ago and it is still working fine. I charge the phone, the iPad, and the computer with it. I charge the JumPack with the solar set up.
I also carry jumper cables. I know. Over kill. But whatever it takes to make you feel safe on the road, DO IT!
The tool that I use the most often is an Allen wrench. The topper has a tendency to loosen, slide around/off and leak. Not fun, so I tighten and tighten after every bumpy road or any day when I have run out of chores. Hint: On your build make sure you have access to the areas that need periodic tightening. I didn’t and was sorry.
Another perfect spot in the New Mexico State Park System. I was camped on the banks of the Rio Grande, which was a trickle when I arrived. 2 days later they opened up the dam for spring irrigation at 2100 cfs . The river filled and then birds came and the fish and the anglers. It was a great spring view.