With 10 pennies & Speed Stick Deodorant I will show you how to make a battery to power an led or more depending on the amount of batteries used. Entered into the pocket size contest PLEASE VOTE
Step 1: Small amount of deodorant
deodorant contains zinc that is why it can be used , take a small amount less than the size of a penny when flattened
Step 2: Vinegar/Lemon juice/Salt Water/Baking Soda
Get any of the above and put it into a cup you can reach into. I used vinegar
Step 3: Cardboard/Paper towel/Coffee filter/Cotton T-shirt/
Take one of your pennies and trace it on the cardboard or whatever your using. Make 10 per 1volt
After you are done cutting them put them into the cup of vinegar for 5sec or so.
Take them out and pat them with a dry paper towel.
put it on your deodorant.
Step 4: Add a penny
take a penny and put it on top
Step 5: Repeat
repeat the process until all 10 pennies are used
FROM THE BOTTOM
Step 6: Wrap in tape attach an led
wrap it in tape if you want and hook up an led. The penny is positive and the deodorant is negative and you have power
Step 7: Expand
the zinc in the deodorant is suspended among other ingredients so it can be recharged via solar panel the possibilities are endless
hope you enjoyed
Step 8: Add on Solar Panel for LED
If you have an extra solar panel you can recharge the batteries and light an LED here is an example in my fish tank.
I am planning to add more blue LEDs soon.