Hi mrcoolpop
Some of us may have difficulty remembering how batteries are connected in parallel or in series to get the higher amperage or voltage. I'm old enough now to have some doubt doing it correctly. I do have a volt meter, and a common flashlight that has two batteries. In the average flashlight the batteries are 1.5 volts and are connected in the flashlight in series, which then has the voltage to the bulb at 3 volts. If I forget, I can use my volt meter to set me straight. Hope this helps.