Button battery connection LED lamp beads
LED lights are light-emitting diodes, the voltage does not need to be certain, can be bright, but with the time changes, the button battery current will be a little change, the color of the light there will be some changes can be very long time, the battery in series, about One and a half no resistance, as long as there is a current through the light can be.
The role of the resistor is to limit the battery when the high current pulse breakdown LED to do the protective effect. You use the battery current is very small.
You can use the button silver oxide battery or button lithium battery.
