This 3V Button Cell Battery Holder is to be used with a CR2032 cell battery. This is a perfect power supply for all of our 3V lights. The switch has a push on, push off button. You can connect up to 10, 3V lights by connecting all the red wires from the lights to the red wire on the power supply and the green wires to the black wire. It is best if you solder the connections so that they do not come loose. Use shrink tube to seal the connection.
