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Thread: Lead Acid Batteries

  1. #1 Lead Acid Batteries 
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    Jun 2008
    Karachi , Pakistan
    Can anybody tell, apart from checking SG and Voltage, is there any good way of detecting a bad or dead cell in a 12V L.A.Battery. What is the chemical formula of liquid battery equalizer.

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  3. #2  
    Forum Professor Zwolver's Avatar
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    May 2006
    The best way is to measure the voltage. If it is less then 12 volts, then you have a dead cell. Most of the times this is a rupture in a conductor, and that shouldn't be to hard to repair. But i am telling you, DON'T open the battery, just buy a new one.

    Also, the number of lead particles in the battery may give an indication of wich one is depleted.

    I think you can use a concentrated and straight lightbeam, and see how much it bends trought the cell. If lead is dissolved in there, there should be a slightly sharper bend there.

    I have no idea what the formulae is, and i don't even know right now if a full battery has all it's lead dissolved or stuck to the plate.

    Growing up, i marveled at star-trek's science, and ignored the perfect society. Now, i try to ignore their science, and marvel at the society.

    Imagine, being able to create matter out of thin air, and not coming up with using drones for boarding hostile ships. Or using drones to defend your own ship. Heck, using drones to block energy attacks, counterattack or for surveillance. Unless, of course, they are nano-machines in your blood, which is a billion times more complex..
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  4. #3 Re: Lead Acid Batteries 
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    Apr 2007
    Quote Originally Posted by behtar_raza
    What is the chemical formula of liquid battery equalizer.
    According to the MSDS, it's cadmium sulfate. Probably a little bit of snake oil in there too. I am somewhat skeptical because I never heard of such product before.
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