Things You'll Need
Instructions
Line up the four batteries on a table and use a pen and label them 1 through 4. This makes wiring the combined series and parallel circuits easier.
Cut six strips of AWG 16-gauge wire using a knife. Cut four strips 2 inches long and the other two strips long enough to connect between the batteries and the electrical device you intend to power.
Use wire strippers to remove 1/4 inch of the plastic coating off the ends of the wires. This exposes the inner metal strands that connect to the batteries to combine the circuits. Twist the metal strands around each other using your fingers to keep the strands together.
Attach the end of the one of the short wire strips to the positive terminal of the battery you labeled "1." The positive terminal is labeled "+." Use a small strip of electrical tape to hold the wire on the terminal.
Attach the opposite end of the wire to the positive terminal of battery number 3 using tape, but at the same time, attach the end of one of the two longer wires to the same battery terminal so that you have two wires attached. The opposite end of the longer wire connects to the device the batteries will power.
Attach a second short strip of wire to the negative terminal labeled "-" on battery number 2 using tape. Attach the opposite and one end of the second long strip of wire to the negative terminal of battery number 4 using tape.
Attach a third short strip of wire to the negative terminal of battery number 1 and the opposite to the positive terminal of battery number 2. Attach the fourth strip of wire to the negative terminal of battery number 3 and the opposite end to the positive terminal of battery number 4. You now have combined a series and parallel circuit. Attach the opposite ends of the two long wires from the battery pack to the device you want to power.