If you're looking for a complete solution, there are a decent number of small wind turbines designed for charging 12v batteries (car batteries) on yachts. Here

If you're looking for a complete solution, there are a decent number of small wind turbines designed for charging 12v batteries (car batteries) on yachts. Here's the 1st company I found on google. I can't personally vouch for the product, but it should give you an idea of what's available. https://www.leadingedgepower.com/le-450-wind-turbine-12-24-48v-1226975.html https://www.leadingedgepower.com/le-450-wind-turbine-12-24-4...