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Charging Issue with Vintage Car Battery: Ammeter Shows 0A, Voltage at 14.5-15V, Potential Sulfation

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  • #31 12712634
    kaiserman
    Level 11  
    can you do that? What reaction will occur perhydrol is waiting.
    And in another battery I still have only 7V and it is sulphated not used for a long time and I think to add 20 ml of perhydrol 30% to one cell, first pour out 20 ml of sulfuric acid on one cell. Then load it. Or pour perhydrol then pour out, pour in distilled water, charge with a pulse charger for 10 hours and then pour sulfuric acid?
    I searched the forum for this, for example, one company adds 20ml of liquid (probably perhydrol) and it helps to desulphurize or then load after adding perhydrol or leave it for a few days?
    What will be the reaction when pouring in, or nothing will heat up?
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  • #32 12712762
    gimak
    Level 41  
    kaiserman wrote:
    What will be the reaction when pouring in, or nothing will heat up?


    I don't know what the reaction may be when the perhydrol comes into contact with dilute sulfuric acid, but if I were to check it, I wouldn't do it in the battery cell, but outside of it. I would take a few drops from the glass battery cell and treat it with a drop of perhydrol. I would do it protected against possible splashes - minimum glasses (helmet) and gloves. Another thing is that I do not see much sense in such an operation, because what would perhydrol react with, what would it bind?
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  • #34 12716148
    gimak
    Level 41  
    kaiserman wrote:
    They also write about power-batt fluid and methods of battery regeneration
    Perhydrol for that

    I have read the contents of both links. A lot has been written, because that is what it is all about, but in my opinion not very specific about the mechanism of these additions.
    By the way, in my opinion, these activities can be effective, i.e. harmless aku, only if it is possible to control the level of the electrolyte in cells and replenish water losses in the electrolyte as a result of electrolysis.
    No less, good luck.
  • #35 18202781
    Anonymous
    Level 1  
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Topic summary

The discussion revolves around a vintage car battery that shows 0A on the ammeter while the voltage reads 14.5-15V during charging attempts. The battery, which had previously been discharged to 0V, is suspected of sulfation or internal damage. Various users suggest troubleshooting steps, including checking the charger type, connecting a second battery in parallel, and monitoring the electrolyte level. Some participants argue that a battery discharged below 10V is typically considered scrap, while others share personal experiences of reviving seemingly dead batteries. The original poster mentions using a Bester 12V/8A charger and a pulse-charging rectifier, but ultimately decides to replace the battery after unsuccessful attempts to recharge it.
Summary generated by the language model.
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