i know it has something to do with electrolytes, but could someone that knows more explain in depth? thanks!
*bonus! if you know a good website with info (not video, some text and pic info) please tell me!
once again, thx

James

While I do not doubt that the electrolytes in a power drink allow the onion to have an oxidation-reduction reaction that produces electricity, there are two concerns:

Voltage – at most you will get 1 or 2 V. Is that enough to return charge to a battery in an iPod? Methinks not

Current – how do you get the current out to feed your iPod? It’s not gonna be a lot and you need to connect the terminals in the right spots p which means you really need to know the reaction itself.

Generally thought of as a hoax. See link