One Go Power 170 watt solar panel and two batteries is all you need to stay off grid in the Anza-Borrego Desert. Of course it helps when it is spring time and the desert has received a lot of winter rain like this year. Check out my Boon Docking Kit on my website for more information.
The Overlander 160 watt solar battery charger is a great way to keep your batteries fully charged. This 160 watt panel comes with a PWM digital charge controller that insures your batteries are properly charged. It also includes a built-in USB port for charging your mobile devices.