This is a must have if you’ll be camping during your road trip. For our trip we purchased a 300w Jackery power bank and a Jackery 100w solar panel. So far it’s been the item we would miss the most.
A lot of campsites won’t have a power source so you’re on your own as far as running out of juice goes. With a power bank we always have a 100 AC receptacle and USB ports for our devices. It lasts for days on a full charge, charges from your car’s 12v plug while driving, has a 110v charger for motel rooms, and can charge via a solar panel for trips to the boonies. Ours has recharged our iPhones, iPads, camera batteries, rechargeable batteries, and my laptop. We also use it to keep our campers 12v battery topped up.
The solar panel we use is also made by Jackery and on a bright day it can charge a 300w power bank in a just few hours. The solar panel comes with a couple USB ports built in so if you’re in a jam you can charge your phone in no time. Our panels output was 97w under a bright sun, plenty of power for our needs.