Step 15:

Have fun playing with your new batteries, maybe you would like to experiment with increasing current by wiring the potato batteries in parallel as well as series.  Good luck and Enjoy!
<p>trying to do this in my science Investigatory Project may I ask if how many is the required voltage for the bulb your using because i tried it with a 12 volt bulb and it took me like 10 potatoes and still no light </p>
<p>One potato battery will make about 0.85 volts. Do the Math to determine how many batteries you will need to light a 12 volt light. Maybe you will need to switch to a lower voltage LED light. Mine only needed 6 batteries to get mine to light. Hope this helps and thanks for asking.</p>
<p>Good info. I sure am going to try it. Probably have my kid take it to school as a project.</p><p>Thanks mate..</p>
<p>Welcome. I used it as a project in a class with teenagers. I thought it was fun! Thanks for commenting.</p>
If the battery works on the electrolyte Potassium, is it possible to make this work with salt water? Would NaCl be electrolytic enough?
yes you can <br>
Yes it can. Look at this Instructable to learn more: <a href="http://www.instructables.com/id/Salt-Water-Powered-Paper-Lights/" rel="nofollow">http://www.instructables.com/id/Salt-Water-Powered-Paper-Lights/.</a>&nbsp; Thanks for commenting.
science comes from the life.
Are your potatos rechargeable:)
Woman, you never cease to amaze me!
I keep coming back to this comment, it really tickles my fancy. :)
When I first learned that the Challenge was potatoes, I knew that I will have to do something wild and wonderful, which meant, not my &quot;potato soup or salad&quot; recipes. Glad you like it.

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Bio: In a valiant attempt to keep myself from dying of boredom, I create.
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