That is quite typical. The silliest thing you can do is to put all sort of sulfates into batteries in the hope of resolving an issue. Urban myth will never ever die. Pencil lead can include some strange substances in addition to carbon (how to recondition a car battery). There are plenty of carbon powder makers. Car 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 discovered in solar garden lights- after a few years they are thrown away as NiCd is used out- just cut around top crimp with hacksaw, decipher 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 obtain Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & emit toxic fumes- do outdoors -do not breathe vapours!!! When cadmium is entirely dissolved( & sometimes the electrolyte cadmium mix is a charming 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 assist! In truth- I got ta state the ONLY thing I used that worked was INOX MX2( in 1 batt so far- 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 must be only gently sulfated).
Still it is proficient at identifying o/c cell/s in batt- pulses increase greater with degree of o/c! have seen 1250 volts! Cut open, & disintegrated pos grid! in 1 cell-others almost so!. reconditioning a battery. Bevan - I would suggest fine-tuning the cadmium by making the cadmium you recuperated from the NiCds the positive in an electroplating cell.
Use 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 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 creative! Why didn't I consider that prior to? I will try it. John - You're one wise gentleman, thanks for the information. Bevan - I think I might have at long last handled to determine what cadmium sulfate does. It absolutely electroplates out onto the unfavorable grid metal when the battery is intentionally pushed into controlled 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, releasing spreads the conductive environment gradually and gradually into the bulk of the lead sulfate. The procedure seems to have a limitation. do i need to charge car battery after battery recondition. It would appear the secret to attaining 100% desulfation is to find out how to get conduction to spread out into 100% of the sulfate.
Adding progressively more just creates dendrites and triggers shorts. The descriptions offered by desulation merchants that insoluble sulfation inevitably 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 positive and negative plates can end up being sulfated, the positive sulfation merely reverses when the battery is charged.
John - If I understand you correctly, did you indicated all the cadmium does is electroplating itself on the negative grid?If so, would not just copper suffices? Afdhal- it is simply John's theory- but i would say cadmium does not simply plate itself- requirements driving- so does copper- BUT copper is a non laster in H2SO4! As are most metals! Lead lasts longer than many! Afdhal - No, copper and copper sulfate are not appropriate.
Cadmium has an electrochemical potential of -0. 4030V. Lead has an electrochemical capacity of -0. 1262V. The electrochemical potential of cadmium is such that it prevents 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 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 negative, the metals far too reactive in battery acid, for anything of benefit to happen.
Bevan - It is not a theory. I ran the experiments. Developed lead-acid cells in glass jars. I observed and measured (reconditioning battery). 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 FACT- your findings MUST be duplicated by other like minded persons- can't see that taking place just yet- still, there is hope.
Bevan - I personally might 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 might get a quarter to a 3rd short-term healing. I would not explain that as a "yes".
Others can easily repeat my expermiment. Humanity being what it is, some people so dislike an ugly reality obstructing of a gorgeous story, their counter arguments will always be in words, not deeds. The litmus test: Desulfation stays a having a hard time market. Something is not right. There is no conspiracy.
If you want batteries to last longer, work on them, assist them while they are still functional, don't fuss over them after they "signed off". We don't feed medication to dead individuals. Why do it to batteries? The experiment is described on "CAN BATTERIES BE BROUGHT BACK". Well, anyone can say what they desire about sulfation or desulfation, however adding Epsom salt (option= 8 teaspoonfuls Epsom salts dissolved in 1 pint distilled water) paired with a 3 day drip charge helped my truck battery maintain a better charge.
The battery performed well through the winter after my treatment and is still going strong! I don't know just how much longer it will live, but I will let you understand when it lastly passes away. Adios Shadmin - The portion of the 1 pint of water that you managed to put into the battery assisted; the three days extra trickle charge assisted; the Epsom salts satisfied your belief - recondition a battery.
ALL the so-called remedies incl epson, alum, cadmium, etc, etc, etc advertisement infinitum not do anything!!! However typically harm!! What numerous posters like to believe is that THEIR!!! treatment made a distinction!! BUT overlook all the other specifications of battery response incl temp, humidity etc in their attempt to make sense of a complicated subject!! (how to recondition a dead car battery). The bare reality is that all automobile charge systems do not fully charge the l/a starter batt- but just around 14v- for a number of various factors.
Bevan - Where does the acid that raised your SG come from? John- simply returned on line after week after altering ISP!!! The increased sg is due to the dollop in the 15 ml added of Inox Mx2 to each cell! IT absolutely is NOT due to minimizing sulfation & therefore raising sg!. recondition your old battery.