Step 6: Tape and Finish.

You did it!! You have made your own penny battery. And it hardly cost you a dime (BAD JOKE) Just tape it up if you wish to keep it together. You can also add an LED to make a flashlight,  use a multimeter to see how much voltage you get, or see if you can power a mini fan in the summer. Also, if you want to power something bigger or just see if you can make it better, try adding more pennies, it should create more voltage if it's an efficient design.
<p>Heh. Kay Dudes your freakin me out here</p>
how long will this run for?
Aaah...... I know.... There is electricity because... the lemon contains acid. HE HE HE.... I will use acid....
and the pennies divide + and -
Make sure the penny is dated 1983 or newer so you can be sure it has a zinc core.
How powerful is the 6 cents?
i have tried your method but as i know it was a complete failure so i just used my dremel multie task tool <br>
The &quot;defacing currency&quot; statute is always misconstrued. It's only a crime if your intent is to commit a fraud (i.e. tear the corner off four $100 bills, tape them onto a $1 bill, turn the whole stack into the bank for $500). See http://www.straightdope.com/columns/read/1405/is-it-legal-to-put-a-hole-in-a-quarter-and-sell-it for details.
Great instructable...<br>Surprised they didn't make yours Featured! Hmmm
What the lemon solution is in chemistry is a salt bridge. All that matters here is that is an ionic solution. Since lemon acid is a weak acid it will not act as well as salt water, since there are less ions in the solution..
I haven't seen this before so thanks! I'm guessing this will not work with a UK penny? They are made from copper plated steel.
NP. You're allowed to &quot;deface&quot; coins to make jewelry (or batteries) so long as you don't use automated equipment to do it.

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