Instructables
Picture of build a coin battery
what can you buy with a coin?many things like aa batteries,aaa batteries ,button coins etc etc.but can you make a battery with the coin itself?no?then i am here to share how to make it.it is a small project no soldering no hazards and the best thing it can be build in 15 minutes .excited?so lets start
 
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Step 1: Ingredients

Picture of ingredients
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.for this you will need
1)few copper pennies
2)a piece of alluminium foil
3)a piece of wet tissue or card board
4)a piece of led(for just testing the battery)
5)scissors
6)pencil(optional)
7)some salt(if you have vinegar ignore salt and water)
8)a bowl of water(not shown in the picture

Step 2: Which coins to be used?

we will be using copper coins.the coins of USA that are worth 1/100 of a dollar that is a cent is to be used.any copper penny would work.but the ones that are made in usa should be after 1982.

Step 3: Basic design

here in this project we will use copper coins as positive charge extracting part and some alluminium foils for negative charge and a wet tissue soaked in saltwater for the electrolyte

Step 4: Making the electrolyte

Picture of making the electrolyte
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so lets start the making.first take the paper towel or wet tissue or cardboard and then put the coin on it.now draw its outline.now cut it from the wet tissue.
IF YOU HAVE VINEGAR THEN SKIP THE NEXT STEP

Step 5: Making the electrolyte part 2

Picture of making the electrolyte part 2
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now take a bowl of water and mix 2-3 spoons of salt(adding more salt increases the performance of battery)KEEP mixing until they dissolve

Step 6: Making the electrolyte part 3

Picture of making the electrolyte  part 3
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now take the piece of wet tissue that we cut earlier, and dip it into the solution of water and salt or in vinegar.then take it out after 2 minutes.soak out the excess water from the wet tissue.

Step 7: Making the anode

Picture of making the anode
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now lets make the anode which which will make negative charge.first take the aluminium foil and put the coin on it.take its out line and cut it out.

the cathode is the coin which is ready made
hb082 months ago

will this work

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argha halder (author)  hb082 months ago

If you are trying to charge the phone with that, then it won't work because the voltage and current is not enough to charge the cell phone using this. But I am not quite sure what you are trying to do over there,, some details would help me understand what you are doing,, sorry for that...

probill made it!4 months ago

just made it.. at the begining it reached 0.63 V per cell !!
it was realy fun!

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argha halder (author)  probill4 months ago

Wow, good clean job, and by the way nice picture!

Can you electrocute your self doing this
This is not going to electricute you. It dosent have that much power. I found out a way to charge my Iphone 4 with it but it takes a long time but it still works.
argha halder (author)  gabrielmichel19469911 months ago
nice innovative idea of charging i phone!
argha halder (author)  thegeekkid11 year ago
no never!sorry to be so serious!it is a small project that may create 3-5 volts which barely can electrocute you any way.so make it without any fear!
I like this project
argha halder (author)  gabrielmichel19469911 months ago
thanks!!!!!!!!!!!
hihihihihhihihihhihihihihhihhihhihhihihi
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argha halder (author)  gabrielmichel19469911 months ago
hellohello hihihihihihihihiihihihihih!
This doesn't electricute you. Its safe to make this battery. I found out a way to charge my Iphone 4 with it but it takes a long time to charge but it still works.
This is Illegal in Britain don't know about the usoa but I think it will be.