That is pretty common. The silliest thing you can do is to put all kinds of sulfates into batteries in the hope of resolving an issue. Urban myth will never pass away. Pencil lead can contain some strange compounds in addition to carbon (reconditioning old battery). There are a lot of carbon powder producers. 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 found in solar garden lights- after a couple of years they are thrown away as NiCd is broken- simply cut around leading crimp with hacksaw, decipher s/s case with cutter, withdraw contents- outer foil is cadmium, inner foil is nickel, & some strong electrolyte & seperator- all wound in spiral pattern.
To obtain Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & give off hazardous fumes- do outside -do not breathe vapours!!! When cadmium is completely liquified( & sometimes the electrolyte cadmium mix is a lovely green, depending upon quality of cadmium from cell maker!)- job done! Got ta state- the mix I have actually contributed 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 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 only lightly 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, & disintegrated pos grid! in 1 cell-others almost so!. recondition car battery for sale. 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 negative. Power source 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 throughout the electroplating cell will be under 0. how do you recondition a battery. 5V. The green you explain would be nickel contamination.
Bevan - That's innovative! Why didn't I think of that prior to? I will attempt it. John - You're one smart gentleman, thanks for the information. Bevan - I believe I might have at long last handled to figure out what cadmium sulfate does. It certainly electroplates out onto the unfavorable grid metal when the battery is deliberately pushed into controlled overcharge.
This helps the lead sulfate nearest the grids to become active 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 appears to have a limitation. recondition battery guide. It would appear the trick to attaining 100% desulfation is to determine how to get conduction to spread into 100% of the sulfate.
Including gradually more just produces dendrites and causes shorts. The descriptions provided by desulation merchants that insoluble sulfation inevitably coats the plates when batteries are utilized which their treatment strips it away is pure fantasy. The sulfate stays right where it is. It is converted. While both favorable and negative plates can become sulfated, the favorable sulfation merely reverses when the battery is charged.
John - If I understand you properly, did you suggested all the cadmium does is electroplating itself on the negative grid?If so, would not simply copper is good enough? 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 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 just when a battery is placed on gassing charge that the voltage at the unfavorable plate prefers electroplating.
Copper has an electrochemical potential Cu of +0. 5210V and Cu2 of +0. 3419V. Copper will merely plate onto the negatives regardless and remain there, triggering the plates to gas and to self discharge and to sulfate. The electrochemical potentials of aluminum, magnesium, potassium, salt, etc. are all far to negative, the metals far too reactive in battery acid, for anything of benefit to take place.
Bevan - It is not a theory. I ran the experiments. Built lead-acid cells in glass containers. I observed and measured (high frequency battery reconditioning). 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 become REALITY- your findings MUST be reproduced by other like minded individuals- can't see that taking place right now- still, there is hope.
Bevan - I personally might not care less what people believe about sulfation. I ran an experiment created to respond to yes or no, whether batteries can be desulfated. My experiment showed that a person may get a quarter to a 3rd short-term healing. I would not explain that as a "yes".
Others can quickly repeat my expermiment. Humanity being what it is, some people so dislike an ugly fact obstructing of a beautiful story, their counter arguments will constantly remain in words, not deeds. The base test: Desulfation stays a having a hard time market. Something is wrong. There is no conspiracy.
If you want batteries to last longer, work on them, assist them while they are still functional, do not fuss over them after they "signed off". We don't feed medicine to dead individuals. Why do it to batteries? The experiment is explained on "CAN BATTERIES BE RESTORED". Well, anybody can say what they want about sulfation or desulfation, but adding Epsom salt (service= 8 teaspoonfuls Epsom salts dissolved in 1 pint distilled water) coupled with a 3 day drip 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 passes away. Adios Shadmin - The part of the 1 pint of water that you managed to take into the battery assisted; the three days extra drip charge helped; the Epsom salts satisfied your belief - recondition dead battery.
ALL the so-called solutions incl epson, alum, cadmium, etc, etc, etc advertisement infinitum do ABSOLUTELY NOTHING!!! However generally harm!! What numerous posters like to believe is that THEIR!!! treatment made a distinction!! BUT ignore all the other specifications of battery reaction incl temp, humidity etc in their effort to make sense of a complicated subject!! (how to recondition any battery). The bare fact is that all automobile charge systems do not fully charge the l/a starter batt- but just around 14v- for several various reasons.
Bevan - Where does the acid that raised your SG originated 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 certainly is NOT due to minimizing sulfation & hence raising sg!. battery reconditioning.