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That is quite common. The silliest thing you can do is to put all sort of sulfates into batteries in the hope of fixing an issue. Urban legends will never pass away. Pencil lead can consist of some unusual substances in addition to carbon (how do you recondition a car battery). There are lots of carbon powder makers. Vehicle tires are about 50% carbon.
Does not cost an arm and a leg. Afdhal- I get cadmium from utilized 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- merely cut around top crimp with hacksaw, unwind s/s case with cutter, withdraw contents- outer foil is cadmium, inner foil is nickel, & some strong electrolyte & seperator- all injury in spiral pattern.
To get Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & offer off toxic fumes- do outdoors -do not breathe vapours!!! When cadmium is completely dissolved( & in some cases the electrolyte cadmium mix is a lovely green, depending upon quality of cadmium from cell maker!)- task done! Got ta state- the mix I have actually contributed to batt cells does not seem to help! In fact- I got ta state the ONLY thing I utilized 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 must be just gently sulfated).
Still it is proficient at recognizing o/c cell/s in batt- pulses go up higher with degree of o/c! have actually seen 1250 volts! Cut open, & broke down pos grid! in 1 cell-others practically so!. how to reconditioning car battery. Bevan - I would recommend refining 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 unfavorable will be dendritic and pure. The real voltage throughout the electroplating cell will be under 0. how to restore a dead car battery. 5V. The green you describe would be nickel contamination.
Bevan - That's imaginative! Why didn't I think about that prior to? I will try it. John - You're one clever gentleman, thanks for the info. Bevan - I think I might have at long last managed to determine what cadmium sulfate does. It certainly electroplates out onto the negative grid metal when the battery is deliberately pressed into regulated overcharge.
This helps the lead sulfate nearest the grids to become active again and to be converted into lead and sulfate ions. Duplicated charging, discharging spreads the conductive environment slowly and gradually into the bulk of the lead sulfate. The procedure seems to have a limitation. automotive battery reconditioning. It would appear the trick to accomplishing 100% desulfation is to determine how to get conduction to spread into 100% of the sulfate.
Including gradually more simply creates dendrites and causes shorts. The explanations given by desulation merchants that insoluble sulfation inevitably coats the plates when batteries are used and that their treatment strips it away is pure fantasy. The sulfate remains right where it is. It is transformed. While both positive and unfavorable plates can become sulfated, the positive 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 unfavorable grid?If so, would not simply copper is good enough? Afdhal- it is just John's theory- however i would state cadmium does not just plate itself- needs driving- so does copper- BUT copper is a non laster in H2SO4! As are most metals! Lead lasts longer than a lot 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 prevents electroplating when a battery is standing. It is only 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 simply 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, sodium, etc. are all far to unfavorable, the metals far too reactive in battery acid, for anything of advantage to happen.
Bevan - It is not a theory. I ran the experiments. Built lead-acid cells in glass jars. I observed and measured (reconditioning a battery). John- to my knowledge, what you have done is an experiment- then forwarded an hypothesis to what you observed- then you advanced a theory- NOW-as to that theory to become FACT- your findings MUST be replicated by other like minded individuals- can't see that taking place right now- still, there is hope.
Bevan - I personally could not care less what individuals opine about sulfation. I ran an experiment created to respond to yes or no, whether batteries can be desulfated. My experiment revealed that a person may get a quarter to a 3rd short-term recovery. I would not describe that as a "yes".
Others can quickly duplicate my expermiment. Humanity being what it is, some individuals so dislike an unsightly reality getting in the way of a stunning story, their counter arguments will constantly be in words, not deeds. The base test: Desulfation remains a having a hard time industry. Something is not best. There is no conspiracy.
If you want batteries to last longer, deal with them, help them while they are still functional, don't fuss over them after they "signed off". We do not feed medication to dead individuals. Why do it to batteries? The experiment is described on "CAN BATTERIES BE RESTORED". Well, anybody can state what they want about sulfation or desulfation, but including Epsom salt (service= 8 teaspoonfuls Epsom salts dissolved in 1 pint distilled water) combined with a 3 day trickle charge assisted my truck battery retain a better charge.
The battery carried out well through the winter season after my treatment and is still going strong! I do not know how much longer it will live, but I will let you know when it finally dies. Adios Shadmin - The portion of the 1 pint of water that you handled to take into the battery helped; the 3 days extra trickle charge assisted; the Epsom salts satisfied your belief - diy recondition car battery.
ALL the so-called solutions incl epson, alum, cadmium, etc, etc, etc ad infinitum do NOTHING!!! But usually damage!! What lots of posters like to think is that THEIR!!! treatment made a distinction!! BUT ignore all the other criteria of battery response incl temperature, humidity etc in their effort to make sense of a complex subject!! (reconditioning a battery). The bare reality is that all automobile charge systems do not totally charge the l/a starter batt- but just around 14v- for a number of different reasons.
Bevan - Where does the acid that raised your SG come from? John- simply got back on line after week after changing ISP!!! The increased sg is because of the dollop in the 15 ml included of Inox Mx2 to each cell! IT absolutely is NOT due to minimizing sulfation & therefore raising sg!. how do you recondition a dead battery.
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How Do You Recondition A Battery
How To Recondition A 12 Volt Battery