Make a Battery with Coins | Science Experiment

[@Accountuser123]

Thank you for this. You saved me with my science fair project :)

[@MrMarkguth]

Next time I get a flat battery in the car, I’ll remember this 😂

[@CarolVarg-gg2ni]

​@Science.Buddies. What kind of red LED light would I use?

[@stephonjulmiste2804]

Thank you for helping us do the test

[@Alternativepope]

Is it possible to do this on larger scale? To produce more electricy using many coins? Thanks.

[@Science.Buddies]

Yes - please see the written instructions linked in the video description for more background information about this project.

[@bititboi]

just make a salt water graphite and aluminium battery from aluminium foil and pencil lead it will be more efficient and cheaper

[@Khoa-bq9sb]

I use this for my science project! I have a question though, do we need both pennies and nickels for it to work or one of them will be fine?

[@Science.Buddies]

You need both pennies and nickels for this to work - you need two different metals for the chemical reaction to take place.

[@NAC21]

Where did you get the small led tester light???

[@Science.Buddies]

You can buy individual LEDs like these in bulk on Amazon, or from electronics companies like Adafruit or SparkFun.

[@raeyu8305]

How would you “recharge” the coin cell battery? Do you add vinegar?

[@Science.Buddies]

Correct! Eventually the electrolyte will dry out, but you can replace it by re-soaking the paper layers.

[@raeyu8305]

@@Science.Buddies Thank you so much!

[@Angelfoodofficial]

Is a multimeter reader necessary for this project??? BTW, you saved my project.

[@imitatioDei]

How could you gain more current ?

[@Science.Buddies]

Hi - we don't mention it in the video, but you can get more current by connecting multiple piles in parallel with each other.

[@imitatioDei]

@@Science.Buddies cool thanks for the reply 👍

[@aGnDa303]

Do you mean, like, stacking multiple cells next to each other on the foil? Would I need to connect the tops of the cells with a foil strip as well? Would filing the coins flat make any difference in the efficiency of the current flow? And does this type of battery generate much or any heat? This seems like a cool project but I want to make sure I'm being safe 🤓

[@Ammar-wx2oy]

Help my science fair is soon. I have a question what type of canson paper do you use

[@Science.Buddies]

Hi - this project just uses paper towels, no special paper is required. A materials list is available here: www.sciencebuddies.org/science-fair-projects/project-ideas/Energy_p015/energy-power/make-a-battery-from-coins#materials

[@ZorlacSkater]

Questions: - Can you load the battery? - Can you put the battery in a container filled with the solution, so that it wont dry out or will this make the battery stop working??

[@Science.Buddies]

1. The battery can only provide a small amount of current for a load like an LED. 2. If you immerse the battery in liquid, it will create short circuits between the cells and the battery will not work.

[@ZorlacSkater]

@@Science.Buddies Thank you! But question 1 is not answered. Can you load it?

[@KrishnaRana.2057]

Can we use another metal instead of nickel

[@ErisApplebottom]

Im guessing you could probably use old pennies and new pennies. Old pennies (before i think 1976?) are made of mostly copper. While newer pennies are mostly zinc. Though you might have to remove the copper coating on the zinc pennies. Just hit it with some sand paper.

[@llvminosity]

Does it have to be a LED light? Could I use a fairy light??

[@ZorlacSkater]

Nice! Why is this listed under the "Kindergarten" section though? I doubt little kids can comprehend this and know how a multimeter works.

[@Science.Buddies]

Can you let us know where you're seeing this listed under "kindergarten"? KZbin has been changing how they categorize educational videos. We have this set as "beginner" level but we did not indicate that it's specifically for kindergarten.

[@ZorlacSkater]

@@Science.Buddies It is under "Kindergarten" on your website.

[@Science.Buddies]

(sorry for the extremely delayed reply, KZbin was only notifying us of new comments, not replies to old comments). The difficulty rating system on our website is more based on how difficult an experiment is to *do* (how hard the setup is, how long it takes, etc). For younger students we assume they have adult help. For basically any topic, it may require a high school or college level science education to fully understand what is going on, but there is usually an appropriate elementary or middle school level explanation, even if students will not fully grasp all the concepts. Hope that makes sense.

[@808zhu]

Cool 👍

[@aixfx]

Can you use any other coins???

[@uluengamotuliki5469]

Well done panda

[@homepixels8067]

😮😮😮

[@realmadridfanrealmadridfan5842]

Tayseer niga

[@janecriswell928]

that's mean

[@deril8538]

HOAXXXXXXX COKKKK

[@Karim-uknwmg702]

is it rechargable ? what happen if you overvolt/ charge it ? how much can it hold ?

[@Science.Buddies]

Hi - you cannot "charge" this battery like you can with a regular rechargeable battery, but eventually the electrolyte will dry out and need to be replaced.