I voted to close as unclear, which I took as a proxy for unmotivated. One could generate eight billion questions of this form by inserting a random noun in place of "potato". If one of those questions is on topic, they all are. Why did you single out the potato?

1. People build potato batteries all the time. 2. “Perform” different? Are you asking if the voltage-generating reactions change the flavor? If so, that’s sort of subjective. 3. You’re really only supposed to ask one question per post, and you’ve asked two, both of which I’d bet you could look up on google or equivalent.

Quotes should have their source stated.

@WillO I reworded the title and question, to apply it to all fruits.

There’s still the issue of “you can check by googling”. It’s considered in poor taste to come and ask a question that you could have typed into google instead of here and gotten the exact same answer.

@LalitPatel " That's a little better, but this question is still missing a motivation. Why did you ask about fruit instead, of, say, toy cars, or dead animals, or abstract paintings? What made you think in the first place that a potato (or any other fruit) might have an electrical capacity?

@controlgroup I removed the second question (about taste), and kept only the first one. I could not find a satisfactory answer to my question by Googling it. Thanks.

I could not find a satisfactory answer to my question by Googling. I searched for “fruit battery” and found How to Make a Fruit Battery.

@WillO A few comments in a question has led me to pose this question. I have reworded my question to apply it to animals as well as fruits.

en.wikipedia.org/wiki/Frog_battery

@ghoster Paulina's comment in a question has led me to pose this question, to clarify my doubts.

Wikipedia and other reputable internet sources can clarify doubts. Some minimal due diligence is expected here before asking a question. Otherwise you are wasting people’s time, and that often provokes downvotes.

en.wikipedia.org/wiki/Lemon_battery says: “magnesium/copper electrodes can generate voltages as large as 1.6 V in lemon cells”

@Ghoster Most articles have incorrectly used the phrase 'generating electricity' instead of 'storing electricity'. I have added "If so, how much electrical capacity do they have?" in my question.

They don’t store electricity. I’m seeing a message that this conversation is too long so I’m done.

@Ghoster Thank you for your valuable inputs. Sorry for the inconvenience I might have caused.

The latest edit overcomes my objections. I have voted to reopen.

@WillO and all others: Thank you for your valuable inputs, which help me learn and improve.

The fruit/potato/frog batteries are essentially Volta cells. The capacity (in Ah or Wh) is determined mainly by the electrodes (their materials and sizes) rather than the thing you stick them into - that serves as electrolyte. These links might help: en.wikipedia.org/wiki/Voltaic_pile en.wikipedia.org/wiki/Galvanic_cell You can also read about flow batteries - they seem closer to what I think you had in mind. en.wikipedia.org/wiki/Flow_battery

I did not object to the word "generate". I objected to the idea that the electric potential comes from the potato. It comes from the electrodes.

@paulina Thanks for clarifying. Sorry for misunderstanding your comment there. In my question, I have written "I felt that ...".

@Karel Thank you. I got it now. How much electricity can be drawn from a fruit-plus-electrodes system will depend [mainly] on the electrodes. After one of the two electrodes is completely depleted, replace it with a new electrode to continue drawing electricity. ... I will remember this by an analogy. How much revenue can be generated from a worker-plus-project system will depend [mainly] on the project. After the project is completely done, get a new project to continue getting the revenue. (Assuming that the worker is still alive!)