That is quite common. The silliest thing you can do is to put all type of sulfates into batteries in the hope of solving an issue. Urban myth will never pass away. Pencil lead can contain some weird substances in addition to carbon (recondition dead battery). There are plenty of carbon powder manufacturers. Cars and truck 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 few years they are tossed out as NiCd is worn- simply cut around leading crimp with hacksaw, unravel s/s case with cutter, withdraw contents- external foil is cadmium, inner foil is nickel, & some strong electrolyte & seperator- all wound in spiral pattern.
To acquire Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & emit hazardous fumes- do outdoors -do not breathe vapours!!! When cadmium is entirely dissolved( & sometimes the electrolyte cadmium mix is a lovely green, depending on quality of cadmium from cell maker!)- job done! Got ta say- the mix I have actually contributed to batt cells does not appear to help! 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 need to be just gently sulfated).
Still it is proficient at determining 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 practically so!. how do you recondition a car battery. Bevan - I would suggest refining the cadmium by making the cadmium you recovered from the NiCds the favorable in an electroplating cell.
Use a tin wire or solder wire negative. Power source 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. recondition 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 attempt it. John - You're one wise gentleman, thanks for the info. Bevan - I believe I may have at long last handled to find out 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 end up being active once again and to be transformed into lead and sulfate ions. Repeated charging, releasing spreads the conductive environment slowly and progressively into the bulk of the lead sulfate. The procedure seems to have a limitation. recondition dead battery. It would appear the trick to achieving 100% desulfation is to find out how to get conduction to spread into 100% of the sulfate.
Including gradually more just produces dendrites and triggers shorts. The descriptions offered by desulation merchants that insoluble sulfation undoubtedly coats the plates when batteries are utilized and that their treatment strips it away is pure fantasy. The sulfate remains right where it is. It is converted. While both positive and unfavorable plates can become sulfated, the positive sulfation simply reverses when the battery is charged.
John - If I comprehend you correctly, did you meant all the cadmium does is electroplating itself on the negative grid?If so, wouldn't simply copper is great enough? Afdhal- it is just John's theory- but i would state cadmium does not just plate itself- needs 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 suitable.
Cadmium has an electrochemical potential of -0. 4030V. Lead has an electrochemical potential of -0. 1262V. The electrochemical capacity 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 negative 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 stay there, triggering the plates to gas and to self discharge and to sulfate. The electrochemical capacities of aluminum, magnesium, potassium, salt, and so on 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. Developed lead-acid cells in glass containers. I observed and measured (auto battery reconditioning). John- to my knowledge, what you have 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 taking place simply yet- still, there is hope.
Bevan - I personally could not care less what individuals believe about sulfation. I ran an experiment designed to answer yes or no, whether batteries can be desulfated. My experiment revealed that a person might get a quarter to a third short-term healing. I would not describe that as a "yes".
Others can quickly repeat my expermiment. Human nature being what it is, some people so do not like an awful reality obstructing of a lovely story, their counter arguments will always be in words, not deeds. The base test: Desulfation remains a having a hard time market. Something is wrong. There is no conspiracy.
If you desire batteries to last longer, work on them, help them while they are still serviceable, do not fuss over them after they "signed off". We do not feed medication to dead individuals. Why do it to batteries? The experiment is described on "CAN BATTERIES BE BROUGHT BACK". Well, anyone can state what they want about sulfation or desulfation, however including Epsom salt (solution= 8 teaspoonfuls Epsom salts dissolved in 1 pint pure water) coupled with a 3 day trickle charge helped my truck battery maintain a much better charge.
The battery carried out well through the winter season after my treatment and is still going strong! I do not understand just how much longer it will live, but I will let you understand 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 satisfied your belief - car battery reconditioning.
ALL the so-called solutions incl epson, alum, cadmium, etc, etc, etc advertisement infinitum do NOTHING!!! But typically damage!! What lots of posters like to think is that THEIR!!! treatment made a difference!! BUT neglect all the other parameters of battery response incl temperature, humidity etc in their effort to understand a complex subject!! (auto battery reconditioning). The bare reality is that all vehicle charge systems do not totally charge the l/a starter batt- however just around 14v- for numerous different reasons.
Bevan - Where does the acid that raised your SG come from? John- simply got back on line after week after altering ISP!!! The increased sg is due to the dollop in the 15 ml included of Inox Mx2 to each cell! IT absolutely is NOT due to minimizing sulfation & hence raising sg!. how do you recondition a car battery.