produce a small amount of voltage. So in a way it can act as a solar panel. The flashlight I made uses one 10mm white led. The led charges the battery and with a flick of
a switch it allows the led to emit light. It is such a small circuit you can fit it into two pop bottle caps. For this small build I used a 10mm white led, small nickel battery
(20mah size of a super cap. good runtime for one led) a blocking diode and a spdt switch.
I will explain how all the componets go hand in hand in the 1st step.
if you want to see a video of this working please copy and paste this ;link into your browser. I didnt feel like uploading it to youtube just to emmbed it. its such a short
video so I hope you dont mind. here is the link https://www.facebook.com/photo.php?v=10200431925699995¬if_t=video_processed
In the comments section you will see there was a bit of confusion. I take full blame for that confusion. When I first measured the voltage output of the led it read as 1.2 volts. That was the foundation of the confusion. However I was measuring the voltage output when the sun was setting and being blocked by clouds and trees. I meaured it again today in absolute sunlight. And it read as high as 2.7 volts. The battery charged to 2.7. Now that is enough to charge the battery and enough to run the led, however it doesnt live up to its full potential. The led works best at 3 volts. I am sorry for the confusion and I thank everyone who commented and got me interested in taking it apart and re-testing the voltage. I will be making a newer better one in the future. The more leds you use in series the higher voltage output you will get. I plan on making a new instructable in a few days. Sorry for the confusion!