Solar Power is natural energy!
To save your batteries while your RV is waiting out winter, I would recommend a battery maintainer. Zamp Solar panels now offer an affordable and portable product that is ideal for the RV. Their 20, 10, and 5 watt battery maintainers are a great way to keep your batteries charged during winter. They can extend the life of a battery up to 3 times longer. You can have the solar panel wired into your coach or go with the convenient portable folding model.