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That is quite typical. The silliest thing you can do is to put all sort of sulfates into batteries in the hope of fixing an issue. Urban myth will never ever die. Pencil lead can include some weird substances in addition to carbon (reconditioning a 12 volt truck battery). There are lots of carbon powder manufacturers. Automobile tires are about 50% carbon.
Does not cost an arm and a leg. Afdhal- I get cadmium from used NiCd cells-aaa or aa sizes- such as found in solar garden lights- after a couple of years they are thrown out as NiCd is worn out- just cut around leading crimp with hacksaw, decipher s/s case with cutter, withdraw contents- external foil is cadmium, inner foil is nickel, & some strong electrolyte & seperator- all wound in spiral pattern.
To get Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & emit toxic fumes- do outdoors -do not breathe vapours!!! When cadmium is totally liquified( & often the electrolyte cadmium mix is a lovely green, depending on quality of cadmium from cell maker!)- task done! Got ta state- the mix I have actually added to batt cells does not seem to assist! In reality- I got ta say the ONLY thing I used that worked was INOX MX2( in 1 batt so far- I will get some more MX2 &try; & try; in other batts to confirm yes or no! Apart from that, the other thing is that the batt itself should be just gently sulfated).
Still it is proficient at identifying o/c cell/s in batt- pulses increase higher with degree of o/c! have seen 1250 volts! Cut open, & broke down pos grid! in 1 cell-others nearly so!. battery recondition. Bevan - I would suggest improving the cadmium by making the cadmium you recuperated from the NiCds the positive in an electroplating cell.
Utilize a tin wire or solder wire unfavorable. Source of power can be 12V battery. Place 220 ohm series resistor. The cadmium that gets plated onto the negative will be dendritic and pure. The real voltage across the electroplating cell will be under 0. auto battery reconditioning. 5V. The green you describe would be nickel contamination.
Bevan - That's creative! Why didn't I consider that prior to? I will try it. John - You're one smart gentleman, thanks for the information. Bevan - I believe I might have at long last managed to figure out what cadmium sulfate does. It definitely electroplates out onto the unfavorable grid metal when the battery is deliberately pressed into regulated overcharge.
This assists the lead sulfate nearest the grids to become active once again and to be transformed into lead and sulfate ions. Repeated charging, releasing spreads the conductive environment gradually and gradually into the bulk of the lead sulfate. The procedure seems to have a limit. test and recondition car battery. It would appear the secret to attaining 100% desulfation is to find out how to get conduction to spread into 100% of the sulfate.
Including progressively more merely produces dendrites and triggers shorts. The explanations given by desulation merchants that insoluble sulfation inevitably coats the plates when batteries are utilized and that their treatment strips it away is pure fantasy. The sulfate remains right where it is. It is transformed. While both positive and negative plates can end up being sulfated, the favorable sulfation simply reverses when the battery is charged.
John - If I understand you correctly, did you meant all the cadmium does is electroplating itself on the negative grid?If so, would not simply copper is excellent enough? Afdhal- it is just John's theory- however i would state cadmium does not just plate itself- requirements driving- so does copper- BUT copper is a non laster in H2SO4! As are most metals! Lead lasts longer than the majority of! Afdhal - No, copper and copper sulfate are not ideal.
Cadmium has an electrochemical capacity of -0. 4030V. Lead has an electrochemical capacity of -0. 1262V. The electrochemical capacity of cadmium is such that it avoids electroplating when a battery is standing. It is just when a battery is put on gassing charge that the voltage at the unfavorable plate prefers electroplating.
Copper has an electrochemical possible Cu of +0. 5210V and Cu2 of +0. 3419V. Copper will just plate onto the negatives regardless and stay there, triggering the plates to gas and to self discharge and to sulfate. The electrochemical capacities of aluminum, magnesium, potassium, salt, and so on are all far to negative, the metals far too reactive in battery acid, for anything of benefit to occur.
Bevan - It is not a theory. I ran the experiments. Constructed lead-acid cells in glass jars. I observed and measured (how to recondition a battery at home). John- to my understanding, what you have actually done is an experiment- then forwarded an hypothesis to what you observed- then you advanced a theory- NOW-as to that theory to end up being REALITY- your findings MUST be replicated by other like minded individuals- can't see that occurring simply yet- still, there is hope.
Bevan - I personally might not care less what individuals suggest about sulfation. I ran an experiment developed to answer yes or no, whether batteries can be desulfated. My experiment revealed that a person might get a quarter to a 3rd short-term healing. I would not describe that as a "yes".
Others can quickly duplicate my expermiment. Human nature being what it is, some individuals so do not like an awful reality getting in the method of a beautiful story, their counter arguments will constantly remain in words, not deeds. The litmus test: Desulfation stays a struggling market. Something is wrong. There is no conspiracy.
If you want batteries to last longer, deal with them, assist them while they are still serviceable, do not fuss over them after they "signed off". We don't feed medicine to dead people. Why do it to batteries? The experiment is explained on "CAN BATTERIES BE RESTORED". Well, anybody can say what they desire about sulfation or desulfation, but adding Epsom salt (solution= 8 teaspoonfuls Epsom salts dissolved in 1 pint pure water) paired with a 3 day drip charge assisted my truck battery retain a better charge.
The battery carried out well through the winter after my treatment and is still going strong! I do not understand just how much longer it will live, but I will let you understand when it finally dies. Adios Shadmin - The portion of the 1 pint of water that you handled to put into the battery helped; the 3 days additional trickle charge helped; the Epsom salts satisfied your belief - battery reconditioning com.
ALL the so-called treatments incl epson, alum, cadmium, etc, etc, etc ad infinitum not do anything!!! However usually damage!! What numerous posters like to believe is that THEIR!!! treatment made a distinction!! BUT ignore all the other specifications of battery response incl temperature, humidity etc in their effort to make sense of a complicated subject!! (diy recondition car battery). The bare fact is that all automotive charge systems do not completely charge the l/a starter batt- but only around 14v- for several different factors.
Bevan - Where does the acid that raised your SG originated from? John- just got back on line after week after altering ISP!!! The increased sg is because of the dollop in the 15 ml added of Inox Mx2 to each cell! IT certainly is NOT due to lowering sulfation & hence raising sg!. 12 volt battery reconditioning.
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