Upload

Loading icon Loading...

This video is unavailable.

How To Make a 3 Penny Battery

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to like Grant Thompson - "The King of Random"'s video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to dislike Grant Thompson - "The King of Random"'s video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to add Grant Thompson - "The King of Random"'s video to your playlist.

Published on Oct 29, 2012

Is there energy hidden inside your pocket change? Convert pennies into make-shift batteries that can drive small current devices like LED's and calculators.

http://www.thekingofrandom.com

Many people have asked how long the green LED stayed on. Surprisingly, it was bright for 2-1/2 weeks before finally fizzling out!

Music by Kevin MacLeod - (Pure Attitude)
http://incompetech.com/

Project inspired by: Julie Yu http://www.exo.net/~jyu/activities/pe...

WARNING: Use of this video content is at your own risk.

LEGALITIES: Some people have asked about the legality of treating pennies in this manner. The federal law states that there are exceptions made for use as "educational, amusement, novelty, jewelry, and similar purposes as long as the volumes treated and the nature of the treatment make it clear that such treatment is not intended as a means by which to profit solely from the value of the metal content of the coins." For more information, see: https://www.federalregister.gov/artic...

This is a wet-cell battery. Pennies newer than 1982 are nearly 98% Zinc.

The redox reaction between the copper and zinc metals allow electrons to flow and each cell provides around 0.6 volts of electric potential.

Here is how to light up an LED and power a calculator using some loose pocket change!

I found this link that helps explain the reaction and why it works: http://www.science.uwaterloo.ca/~cchi...

Basically, a galvanic cell consists of at least two half cells, a reduction cell and an oxidation cell. Chemical reactions in the two half cells provide the electrons for the galvanic cell operations. Copper ions gain electrons (reduced) while zinc ions give them up (oxidized). = (redox)

An electrolyte like salt water or vinegar helps get the metals into ions. Electrons flow through the electric conductors connecting the electrodes, as ions flow through the salt bridge.

The overall reaction of the galvanic cell is: Zn + Cu2+ = Zn2+ + Cu

Loading icon Loading...

Loading icon Loading...

Loading icon Loading...

The interactive transcript could not be loaded.

Loading icon Loading...

Loading icon Loading...

Ratings have been disabled for this video.
Rating is available when the video has been rented.
This feature is not available right now. Please try again later.

Loading icon Loading...

Advertisement
Loading...
Working...
Sign in to add this to Watch Later

Add to