Make Your Own DIY Battery





Introduction: Make Your Own DIY Battery

About: Thank you instructables!!

This project is very environmentally beneficial, as it takes a dead battery and turns them into a new one, preventing the creation of electronic waste. The possibilities are endless on this concept (stronger batteries, tiny batteries) and just think of what it would be like if everyone on this planet was able to recycle old batteries.Just we need the electronic waste to be turned into a new battery .Needed for just about every electronic project, electronics revolve around them. But think about it, What happens once they lose their power? You throw them away, just like all 7 billion of us on earth.

Step 1: Collecting Things to Make Battery

For this project we need :-

  1. Old discarded AA sized Battery
  2. Aluminium Foil
  3. A Tiny Container
  4. Salt Solution
  5. Wires
  6. only we need these things to make DIY battery

These all can be got from scrap except precious water .

Step 2: Making Cathode

Most of the dry cells they consist of a Carbon Rod (what we need) surrounded by moist electrolyte paste.

Cathode (Positive ): Carbon

Use the pliers to take out carbon rod from the cell.Once its off, you will see the top of the carbon rod, slowly pull until the carbon rod is out.

Step 3: Making Anode

To make anode we need aluminium foil to be folded into same size as carbon rod.Fold it Hot dog style and then roll it up so its around the same size and length as the carbon rod.In many other projects zinc anode had been used but aluminium foil also works instead of zinc strip.

Step 4: Inserting Electrodes

Drill a whole the size of the carbon rod so it fits snug. Place the carbon rod into one of the hole leaving about 1/2 an ince sticking out from the top

Now do the same for the foil strip

Step 5: Connecting Wires

The carbon rod is now +

The foil is now -

just take two wires and connect them to the two electrodes . Use glue to make it water proof .

Step 6: Making Electrolyte

Fill the tiny container with a salt water mixture and place the lid back onto the container. You are now done.Mix it fully to make a solution . If desired make it saturated.

Step 7: Done!

The current is not too much strong but can be generated more if many batteries like this are joined in series.Just think of the limitless possibilities you can create with your own batteries. Not only do they work, they also reuse old dead batteries, preventing the creation of electronic waste.

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    No electronic waste?
    For real, have you used everything from the dead battery?

    I'd like to tell you this(hope you won't be upset) that instead of opening dead or seemingly dead batteries, you can use them in Joule thief circuits. But overall, you made a very good use of dead batteries! You're intelligent!

    hello, thanks for posting this awesome craft ! but as a complete noob, i just don't know which uses i could give to this battery... can somebody help me ? :/


    1. how long does the energy last?
    2. and if it dies out, does adding salt boost the output?
    3. can this be done w/ a carbon rod and an aluminum rod not coming from a dead battery?

    No electronic waste? What did you do with the rest of the battery after you removed the carbon rod? :(

    1 reply

    see the ible rechargable battery of mine the waste has been utilized manganese dioxide

    Copper , aluminum and bleach make a better battery.

    Actually if you Just use salty
    Water And two Carbon electrodes you can get a batt with 1,5 V BUT it needs To be charged for several days. I found this out when trying to make chlorate At home :-)

    2 replies

    salty water and two carbon rods are the materials to make chlorate salts at home. The procedure involves passing aprox 5 volts and a good amperage for ex 20 amperes for aprox two days (in a two liters solution) I did not have a 20 amps power supply so I used only 2 amps and therefore in my case I needed 20 days to generate chlorate, HOWEVER I did not check after how many hours the carbons rods would be already generating voltage as a homemade battery. Also I do not know how much it takes for the battery effect disappear. These are things to try and discover. I was focused on obtaining chlorate used to make pirotechnics. I desincourage trying to make chlorate at home since it can be very very dangerous (however make the two carbon rods battery seems a lot of fun). The chlorate dangers appears only when you dry the salt out of the salty water solution. Once the rods have being used for "x" hours one of them erodes and this one becomes the positive if used as a battery.

    Thank you for this nice project! I was thinking about more enviromental materials for use as cathode... Like incense burners, or pencil element? Is it possible? Really great green project! Congrats! Renato Aloi

    1 reply

    I"m all about recycling---- and energy and this is perfect for small emergency use..

    1 reply

    hi nice project. Thanks for sharing. I think people who built this one would like to build also a joule thief. The joule thief is an eletronic device (easy to built at home) that elevates the voltage from the 0,8 up to 3 volts so that just one of these little batt can light a led.

    2 replies

    Here is the joule thief instructable:


    whats the v& i for then battery

    What's the voltage and current from this?