This is a video of Holiday LED lights. This video shows how to make a holiday LED lights that is powered by battery. The battery that is used in in this video is a coin battery, standard CR232. The LED is a 5mm colored LED. The LED has two leg, the shorter leg is negative and the longer leg s positive. Here is the video:
The coin battery also has a negative and positive side. When the positive side is connected to the shorter leg, the LED will not light on. The LED will light on when the shorter light is connected with the negative side of the battery.