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Hand Cranked Flashlight Mod plus Joule Thief

Step 2Replacing the Old Battery

Replacing the Old Battery
This step was easier than I thought. It took a couple of minutes.

The only thing one has to worry about in this step is to get the positive of the capacitor in the same hole as the positive side of the battery. The same thing with the negative side.
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1 comment
Jun 5, 2011. 5:51 PM-max- says:
you should consider replacing the leds with brighter ones.

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