
Yes, charging two separate batteries using a solar panel is relatively easy. Many solar charge controllers can only recharge one battery at a time.. . Connecting the positive side of a solar panel to the positive battery terminal and the negative solar panel side to the negative battery terminal is the most straightforward. . Wiring a network of batteries in series does not affect the amp hours or total capacity of the batteries. It just influences how much power they can output at once. Plus, connecting in series. . Every component in a parallel circuit gets the same voltage. The voltages are the same when batteries are connected in parallel, but the energy or usable current is enhanced. As a result, the batteries will last longer.