That is pretty common. The silliest thing you can do is to put all kinds of sulfates into batteries in the hope of solving an issue. Urban legends will never pass away. Pencil lead can contain some odd compounds in addition to carbon (how to recondition a battery at home). There are plenty of carbon powder producers. Automobile tires have to do with 50% carbon.
Does not cost an arm and a leg. Afdhal- I get cadmium from used NiCd cells-aaa or aa sizes- such as discovered in solar garden lights- after a couple of years they are tossed out as NiCd is broken- merely cut around top crimp with hacksaw, unravel s/s case with cutter, withdraw contents- external 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 & emit toxic fumes- do outdoors -do not breathe vapours!!! When cadmium is completely dissolved( & sometimes the electrolyte cadmium mix is a lovely green, depending on quality of cadmium from cell maker!)- task done! Got ta say- the mix I have added to batt cells does not appear to assist! In reality- I got ta state the ONLY thing I used that worked was INOX MX2( in 1 batt up until now- I will get some more MX2 &try; & shot; 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 determining o/c cell/s in batt- pulses go up greater with degree of o/c! have seen 1250 volts! Cut open, & disintegrated pos grid! in 1 cell-others practically so!. battery reconditioning com. Bevan - I would suggest refining the cadmium by making the cadmium you recuperated from the NiCds the favorable in an electroplating cell.
Utilize a tin wire or solder wire unfavorable. Source of power can be 12V battery. Insert 220 ohm series resistor. The cadmium that gets plated onto the unfavorable will be dendritic and pure. The real voltage across the electroplating cell will be under 0. how to restore a dead car battery. 5V. The green you explain would be nickel contamination.
Bevan - That's imaginative! Why didn't I believe of that prior to? I will try it. John - You're one smart gentleman, thanks for the details. Bevan - I believe I may have at long last handled to figure out what cadmium sulfate does. It certainly electroplates out onto the negative grid metal when the battery is intentionally pushed into regulated overcharge.
This helps the lead sulfate nearest the grids to end up being active once again and to be converted into lead and sulfate ions. Repeated charging, discharging spreads the conductive environment gradually and gradually into the bulk of the lead sulfate. The procedure appears to have a limit. recondition 12 volt battery. It would appear the trick to attaining 100% desulfation is to figure out how to get conduction to spread into 100% of the sulfate.
Adding progressively more simply develops dendrites and causes shorts. The explanations provided by desulation merchants that insoluble sulfation undoubtedly coats the plates when batteries are used and that their treatment strips it away is pure dream. The sulfate remains right where it is. It is transformed. While both favorable and negative plates can end up being sulfated, the positive sulfation just reverses when the battery is charged.
John - If I understand you properly, did you indicated all the cadmium does is electroplating itself on the negative grid?If so, would not just copper suffices? 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 a lot of! Afdhal - No, copper and copper sulfate are not ideal.
Cadmium has an electrochemical potential 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 negative plate favors electroplating.
Copper has an electrochemical prospective Cu of +0. 5210V and Cu2 of +0. 3419V. Copper will simply plate onto the negatives regardless and remain there, causing 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 benefit to happen.
Bevan - It is not a theory. I ran the experiments. Built lead-acid cells in glass containers. I observed and measured (how to reconditioning car battery). John- to my knowledge, 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 TRUTH- your findings MUST be duplicated by other like minded individuals- can't see that occurring simply yet- still, there is hope.
Bevan - I personally might not care less what people suggest about sulfation. I ran an experiment created to answer yes or no, whether batteries can be desulfated. My experiment showed that one may get a quarter to a third 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 dislike an awful fact getting in the method of a beautiful story, their counter arguments will constantly be in words, not deeds. The litmus test: Desulfation remains a having a hard time industry. Something is wrong. There is no conspiracy.
If you desire batteries to last longer, deal with them, help them while they are still serviceable, don't fuss over them after they "signed off". We do not feed medicine to dead people. Why do it to batteries? The experiment is described on "CAN BATTERIES BE RESTORED". Well, anybody can state what they desire about sulfation or desulfation, but including Epsom salt (option= 8 teaspoonfuls Epsom salts dissolved in 1 pint pure water) coupled with a 3 day trickle charge helped my truck battery retain a better charge.
The battery performed well through the winter after my treatment and is still going strong! I do not know just how much longer it will live, however I will let you know when it lastly passes away. Adios Shadmin - The part of the 1 pint of water that you managed to put into the battery assisted; the three days extra trickle charge helped; the Epsom salts pleased your belief - recondition a car battery.
ALL the so-called solutions incl epson, alum, cadmium, etc, etc, etc ad infinitum not do anything!!! However typically hurt!! What lots of posters like to believe is that THEIR!!! treatment made a distinction!! BUT ignore all the other parameters of battery reaction incl temp, humidity etc in their attempt to make sense of a complicated subject!! (test and recondition car battery). The bare reality is that all automobile charge systems do not fully charge the l/a starter batt- however just around 14v- for numerous different factors.
Bevan - Where does the acid that raised your SG come from? John- just returned 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 definitely is NOT due to decreasing sulfation & thus raising sg!. materials needed to recondition car battery.