That is quite common. The silliest thing you can do is to put all kinds of sulfates into batteries in the hope of solving an issue. Urban myth will never die. Pencil lead can include some weird compounds in addition to carbon (battery reconditioning). There are lots of carbon powder makers. Cars and truck 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 discovered in solar garden lights- after a few years they are thrown away as NiCd is worn out- merely 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 & provide off hazardous fumes- do outside -do not breathe vapours!!! When cadmium is entirely liquified( & sometimes the electrolyte cadmium mix is a lovely green, depending upon quality of cadmium from cell maker!)- task done! Got ta state- the mix I have included to batt cells does not seem to help! In fact- I got ta state the ONLY thing I utilized that worked was INOX MX2( in 1 batt up until now- I will get some more MX2 &try; & try; in other batts to confirm yes or no! Apart from that, the other thing is that the batt itself should be just lightly sulfated).
Still it is great at recognizing 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 nearly so!. automotive battery reconditioning. Bevan - I would suggest refining the cadmium by making the cadmium you recovered from the NiCds the favorable in an electroplating cell.
Utilize a tin wire or solder wire unfavorable. Power source can be 12V battery. Place 220 ohm series resistor. The cadmium that gets plated onto the unfavorable will be dendritic and pure. The actual voltage across the electroplating cell will be under 0. recondition car battery for sale. 5V. The green you describe would be nickel contamination.
Bevan - That's creative! Why didn't I consider that prior to? I will attempt it. John - You're one wise gentleman, thanks for the details. Bevan - I think I may have at long last managed to determine what cadmium sulfate does. It certainly 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 again and to be converted into lead and sulfate ions. Repeated charging, discharging spreads the conductive environment gradually and progressively into the bulk of the lead sulfate. The process seems to have a limitation. what is battery reconditioning. It would appear the trick to attaining 100% desulfation is to figure out how to get conduction to spread into 100% of the sulfate.
Adding gradually more just produces dendrites and triggers shorts. The descriptions offered 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 end up being sulfated, the favorable sulfation just reverses when the battery is charged.
John - If I understand you correctly, did you indicated all the cadmium does is electroplating itself on the unfavorable grid?If so, would not just copper is good enough? Afdhal- it is just John's theory- but i would state 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 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 unfavorable plate favors 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, causing the plates to gas and to self discharge and to sulfate. The electrochemical potentials 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 determined (how do you recondition a dead battery). 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 happening right now- still, there is hope.
Bevan - I personally could not care less what people believe about sulfation. I ran an experiment created to answer yes or no, whether batteries can be desulfated. My experiment showed that one might get a quarter to a third short-term recovery. I would not explain that as a "yes".
Others can easily duplicate my expermiment. Humanity being what it is, some individuals so do not like an awful fact obstructing of a lovely story, their counter arguments will always be in words, not deeds. The litmus test: Desulfation remains a having a hard time industry. Something is wrong. There is no conspiracy.
If you desire batteries to last longer, deal with them, assist 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 explained on "CAN BATTERIES BE RESTORED". 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) combined 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 how much longer it will live, but I will let you know when it finally passes away. Adios Shadmin - The portion of the 1 pint of water that you handled to put into the battery helped; the 3 days additional trickle charge assisted; the Epsom salts satisfied your belief - how to restore a dead battery car.
ALL the so-called remedies incl epson, alum, cadmium, etc, etc, etc ad infinitum not do anything!!! But normally damage!! What many posters like to think is that THEIR!!! treatment made a distinction!! BUT ignore all the other criteria of battery reaction incl temp, humidity etc in their effort to make sense of a complicated subject!! (how to recondition a 12 volt battery). The bare fact is that all automobile charge systems do not totally charge the l/a starter batt- however just around 14v- for several different reasons.
Bevan - Where does the acid that raised your SG come from? John- simply got back on line after week after changing 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 & thus raising sg!. test and recondition car battery.