How To Charge Two Batteries With One Solar Panel

To charge a battery with a solar panel connect a charge connector to the solar panel.

How to charge two batteries with one solar panel.

To wire two or more solar panels and batteries in parallel simply connect the positive terminal of solar panel or battery to the positive terminal of solar panel or battery and vise versa respectively as shown in the fig below. But i d suggest you use a proper charger circuit to do it. Notice the two discrete battery connection points on both sides of the solar array connection on the back of the above controller. You haven t said what kind of batteries they are and that matters as to how they should be charged.

Divide the wattage of the solar panel by the voltage of the battery to get the number of amps your charge connector needs to handle. Most solar charge controllers will only allow you to charge one battery. Looks to me you ll be charging them in series because that s the way they ll be connected. In what way are they connected series or paralell no both batteries will equal out once power starts coming from the solar panel you do not have to charge each seperately.