That is pretty typical. The silliest thing you can do is to put all type of sulfates into batteries in the hope of fixing a problem. Urban myth will never pass away. Pencil lead can consist of some strange compounds in addition to carbon (what is battery reconditioning). There are plenty of carbon powder manufacturers. Car 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 away as NiCd is worn- just cut around top crimp with hacksaw, unwind s/s case with cutter, withdraw contents- external foil is cadmium, inner foil is nickel, & some solid electrolyte & seperator- all wound in spiral pattern.
To get Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & release toxic fumes- do outside -do not breathe vapours!!! When cadmium is entirely dissolved( & sometimes the electrolyte cadmium mix is a beautiful green, depending on quality of cadmium from cell maker!)- job done! Got ta say- the mix I have added to batt cells does not seem to assist! In reality- 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 verify 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 go up higher with degree of o/c! have seen 1250 volts! Cut open, & broke down pos grid! in 1 cell-others almost so!. materials needed to recondition car battery. Bevan - I would suggest fine-tuning the cadmium by making the cadmium you recuperated from the NiCds the positive in an electroplating cell.
Utilize a tin wire or solder wire negative. Source of power can be 12V battery. Insert 220 ohm series resistor. The cadmium that gets plated onto the negative will be dendritic and pure. The actual voltage throughout the electroplating cell will be under 0. automotive battery reconditioning. 5V. The green you explain 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 wise gentleman, thanks for the information. Bevan - I think I may have at long last managed to determine what cadmium sulfate does. It definitely electroplates out onto the negative grid metal when the battery is deliberately pushed into regulated overcharge.
This assists the lead sulfate nearest the grids to become active once again and to be converted into lead and sulfate ions. Duplicated charging, releasing spreads the conductive environment slowly and progressively into the bulk of the lead sulfate. The process seems to have a limitation. reconditioning old battery. It would appear the trick to accomplishing 100% desulfation is to determine how to get conduction to spread out into 100% of the sulfate.
Including gradually more simply produces dendrites and causes shorts. The explanations offered by desulation merchants that insoluble sulfation undoubtedly coats the plates when batteries are used which their treatment strips it away is pure dream. The sulfate remains right where it is. It is transformed. While both favorable and unfavorable plates can become sulfated, the positive sulfation just reverses when the battery is charged.
John - If I comprehend you correctly, did you suggested all the cadmium does is electroplating itself on the unfavorable grid?If so, wouldn't simply copper suffices? Afdhal- it is just John's theory- but i would say cadmium does not simply plate itself- needs driving- so does copper- BUT copper is a non laster in H2SO4! As are most metals! Lead lasts longer than most! 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 potential of cadmium is such that it avoids 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 just plate onto the negatives regardless and remain 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 benefit to happen.
Bevan - It is not a theory. I ran the experiments. Built lead-acid cells in glass jars. I observed and determined (recondition car battery for sale). 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 reproduced by other like minded individuals- can't see that happening right now- still, there is hope.
Bevan - I personally could not care less what people 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 recovery. I would not explain that as a "yes".
Others can easily duplicate my expermiment. Humanity being what it is, some people so dislike an unsightly reality obstructing of a lovely story, their counter arguments will constantly be in words, not deeds. The base test: Desulfation remains a having a hard time market. Something is not ideal. There is no conspiracy.
If you desire batteries to last longer, work on them, help them while they are still functional, don't 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 BROUGHT BACK". Well, anyone can state what they want about sulfation or desulfation, however including Epsom salt (option= 8 teaspoonfuls Epsom salts liquified in 1 pint pure water) paired with a 3 day drip charge helped my truck battery keep a much better charge.
The battery performed well through the winter season after my treatment and is still going strong! I don't know how much longer it will live, but I will let you know when it finally dies. Adios Shadmin - The part of the 1 pint of water that you managed to put into the battery helped; the three days additional drip charge helped; the Epsom salts pleased your belief - how to recondition a dead car battery.
ALL the so-called treatments incl epson, alum, cadmium, etc, etc, etc ad infinitum not do anything!!! But normally harm!! What numerous posters like to think is that THEIR!!! treatment made a difference!! BUT overlook all the other criteria of battery action incl temperature, humidity etc in their effort to make sense of a complex subject!! (how to recondition any battery). The bare reality is that all automobile charge systems do not completely charge the l/a starter batt- however just around 14v- for several various reasons.
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 included of Inox Mx2 to each cell! IT definitely is NOT due to minimizing sulfation & thus raising sg!. how to recondition a car battery.