Figuring this power stuff has my head spinning

1. It will not help you with TV but most RVs have a 12 Volt outlet near the TV. I purchase a 12 volt multi-port USB adapter that will allow you to charge your phones from the house batteries.

2. Teach the kids to play board games or card games -- not to play with electronics. Plus you have family face time.

3. While not the best solution, you can always charge the house batteries by running your truck for a few hours. Depending on how often you camp, fuel may be cheaper than a generator.