Who doesn’t like to use a homemade battery that is giving free energy? Well maybe it doesn’t last long but you get the idea that it is free and it is made out of pennies which is cooler than ever. Before you have seen the battery made out of lemons or apples or bananas that were showing some kind of charge. Now this battery is something else and it involves a little higher chemistry than cutting a lemon.
For this project filmed by the one and only YouTube user Grant Thompson – “The King of Random” to work we will need a lot of pennies and those must be newer than 1982. So start sorting them out and place them on the work table. Then take the 100 sanding paper and start sanding the one side of the pennies. These pennies are 98 percent zinc and that is what we need the most in order to get some free energy out of these.
After sanding the pennies, but not too much of course, you will need some thick cardboard. Start cutting the cardboard in squares but just about the same size of the pennies. After these squares are cut throw them in a cup filled with vinegar in order to soak them. There will be a chemical reaction from the vinegar and the pennies made out of zinc that will release an electrical charge. And that is what we are doing here, getting the chemical reaction that we want so that free electricity will come from this homemade battery.
One stack of penny and a cardboard square is placing out merely 0.5 volts. That is amazing. If you stack them together you should get about 6 volts which is just perfect for lighting up a LED. The host made a test to see how long the homemade battery will last, and after two days the LED is still ON.
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