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Thread: Can anyone tell me what the core of this battery is?

  1. #1
    Join Date
    Jan 2015
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    Ohio
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    Can anyone tell me what the core of this battery is?

    I'd like to try this, especially the last part where he uses it as a spot welder. But the two different batteries I cut open do not have a solid core. They just have a paper tube filled with something. It would be pretty handy to have that ability for occasional use without making or buying an actual spot welder. I made one of those spot welder caps for my mig and meh...it sort of works in a limited way.

  2. #2
    Join Date
    Mar 2015
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    Milwaukee, WI
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    Re: Can anyone tell me what the core of this battery is?

    He's using the carbon electrode from a carbon-zinc battery (heavy duty battery). The alkaline battery label on it is false advertising.

  3. #3
    Join Date
    Apr 2022
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    Re: Can anyone tell me what the core of this battery is?

    You can buy carbon rods on ebay. I bought a few to try to see if I could use my welder to heat metal to bend/shrink it...never got around to trying it though.

  4. #4
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    Jan 2015
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    Ohio
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    Re: Can anyone tell me what the core of this battery is?

    eBay has carbon fiber rods and one offering of carbon arc torch carbon rods. Which should I use or something else?

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