Living off grid is a RV or cabin or even in your home you may need a way to provide power to appliances and lights. You can use a gasoline generator, solar panel, and even wind turbines. All three of these items work well until you run out of gasoline, or the sun does not shine, or the wind stops blowing. Under these situations you need a way to charge your 12 volt batteries being used to provide power. How about using people power?
Continue to learn about how to use people power for off grid battery charging: