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This is a derivation of brenn10's battery based on a comment by westfw, mainly because I wanted to see if it would work. Either watch a lame video, ...
sandpaper post 1982 pennies wire & solder soldering iron cardboard lemon juice led
Sand one face off each penny to expose the zinc core. Using 220 grit and holding in my fingers, it took about 45 secs of sanding to do ...
Cut up some cardboard from the back of a notebook and soak it in lemon juice, then blot dry.
pick out two pennies and solder leads to one face on each of them, one with the lead on the copper face, the other with it on the ...
6 Cent LED Throwieby drinkmorecoffee
Lemon Batteryby ajensen19
The Bio-Battery - Power for the future. (So easy a 10 year old can do it.)by Mr. Rig It
Lemon Batteries: Lighting an LED with Lemonsby mhland
How to Make Batteries From Spare Changeby The King of Random
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