That is quite common. The silliest thing you can do is to put all kinds of sulfates into batteries in the hope of fixing an issue. Urban myth will never ever die. Pencil lead can contain some strange compounds in addition to carbon (recondition car battery for sale). There are a lot of carbon powder makers. Car tyres 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 couple of years they are tossed out as NiCd is used out- 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 injury in spiral pattern.
To obtain Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & offer off poisonous fumes- do outside -do not breathe vapours!!! When cadmium is totally dissolved( & often the electrolyte cadmium mix is a charming green, depending upon quality of cadmium from cell maker!)- job done! Got ta say- the mix I have contributed to batt cells does not seem to assist! In reality- 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; & try; in other batts to validate yes or no! Apart from that, the other thing is that the batt itself should be only gently sulfated).
Still it is proficient at recognizing o/c cell/s in batt- pulses increase higher with degree of o/c! have actually seen 1250 volts! Cut open, & broke down pos grid! in 1 cell-others almost so!. recondition a car battery. Bevan - I would suggest improving the cadmium by making the cadmium you recovered from the NiCds the positive in an electroplating cell.
Use 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 actual voltage throughout the electroplating cell will be under 0. how to recondition a 12v 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 wise gentleman, thanks for the info. Bevan - I believe I may have at long last handled to determine what cadmium sulfate does. It absolutely electroplates out onto the negative grid metal when the battery is intentionally pressed into regulated overcharge.
This helps the lead sulfate nearest the grids to become active once again and to be converted into lead and sulfate ions. Duplicated charging, discharging spreads the conductive environment gradually and progressively into the bulk of the lead sulfate. The process appears to have a limitation. how do you recondition a dead car battery. It would appear the secret to attaining 100% desulfation is to find out how to get conduction to spread into 100% of the sulfate.
Adding gradually more simply produces dendrites and causes shorts. The descriptions offered by desulation merchants that insoluble sulfation undoubtedly 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 favorable and negative plates can end up being sulfated, the favorable sulfation just reverses when the battery is charged.
John - If I understand you correctly, did you implied all the cadmium does is electroplating itself on the unfavorable 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- needs 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 suitable.
Cadmium has an electrochemical potential of -0. 4030V. Lead has an electrochemical potential 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 placed on gassing charge that the voltage at the negative plate prefers electroplating.
Copper has an electrochemical possible Cu of +0. 5210V and Cu2 of +0. 3419V. Copper will merely plate onto the negatives regardless and stay there, triggering the plates to gas and to self discharge and to sulfate. The electrochemical potentials of aluminum, magnesium, potassium, sodium, and so on 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. Built lead-acid cells in glass containers. I observed and measured (high frequency battery reconditioning). 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 become FACT- 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 individuals believe about sulfation. I ran an experiment created to address yes or no, whether batteries can be desulfated. My experiment showed that a person may get a quarter to a third short-term healing. 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 truth getting in the way of a beautiful story, their counter arguments will constantly be in words, not deeds. The litmus test: Desulfation stays a struggling market. Something is wrong. There is no conspiracy.
If you desire 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 medicine to dead individuals. Why do it to batteries? The experiment is described on "CAN BATTERIES BE BROUGHT BACK". Well, anybody can state what they desire about sulfation or desulfation, but adding Epsom salt (option= 8 teaspoonfuls Epsom salts liquified in 1 pint distilled water) combined with a 3 day drip charge helped my truck battery retain a much better charge.
The battery performed well through the winter season after my treatment and is still going strong! I don't understand how much longer it will live, however I will let you know when it lastly dies. Adios Shadmin - The part of the 1 pint of water that you managed to take into the battery assisted; the three days additional trickle charge assisted; the Epsom salts pleased your belief - how to recondition a 12v battery.
ALL the so-called remedies incl epson, alum, cadmium, etc, etc, etc advertisement infinitum not do anything!!! But usually damage!! What many posters like to believe is that THEIR!!! treatment made a distinction!! BUT overlook all the other parameters of battery reaction incl temp, humidity etc in their effort to understand a complex subject!! (high frequency battery reconditioning). The bare reality is that all vehicle charge systems do not completely charge the l/a starter batt- however just around 14v- for numerous different factors.
Bevan - Where does the acid that raised your SG originated from? John- just got back on line after week after changing ISP!!! The increased sg is due to the dollop in the 15 ml added of Inox Mx2 to each cell! IT certainly is NOT due to lowering sulfation & therefore raising sg!. materials needed to recondition car battery.