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Ran out of battery? You can now make your own battery with some of the objects you'll find lying around your house!

Step 1: Materials Needed:

You can also use a Voltmeter to check if it has already produced your desire voltage.

Step 2: Cut Coin-sized Circles From the Aluminum Foil and Cardboard.

Step 3: Dip the Circles Made From Cardboard in the Mixture of Vinegar and Salt.

Step 4: Put Them Together. First, the Foil Followed by the Cardboard.

Step 5: Measure.

Just continue adding coins, foil and cardboard until it reaches your desired voltage. Well, what I want was 9V but I only got 4.33V so I added more 'till it reached 9V.

Step 6: Put the Wires.

Step 7: Tape Them Together to Prevent Them From Being Separated.

That's it! Now you have your own homemade battery! :)
what is amount of salt & vinegar to mix
That's really cool! How long does it last?

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