3V is sufficient to turn on any LED, but is within its reverse break down voltage rating (that is why I did not use the common 9V battery). Short circuit current is approx. 30mA. I used a 3V lithium ...

Learn how to make a powerful 220V LED light and connect it with a 3V setup. This easy guide will walk you through the process of creating bright and efficient lighting at home. Record-Breaking ...