That is quite common. The silliest thing you can do is to put all kinds of sulfates into batteries in the hope of resolving a problem. Urban legends will never ever die. Pencil lead can contain some odd substances in addition to carbon (how to recondition a 12 volt battery). There are plenty of carbon powder producers. Cars and truck 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 discovered in solar garden lights- after a few years they are tossed out as NiCd is used out- simply cut around leading crimp with hacksaw, unwind s/s case with cutter, withdraw contents- external foil is cadmium, inner foil is nickel, & some solid electrolyte & seperator- all injury in spiral pattern.
To obtain Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & emit poisonous fumes- do outdoors -do not breathe vapours!!! When cadmium is completely dissolved( & often the electrolyte cadmium mix is a charming green, depending on quality of cadmium from cell maker!)- task done! Got ta state- the mix I have actually added to batt cells does not appear to help! In reality- I got ta say the ONLY thing I utilized that worked was INOX MX2( in 1 batt so far- 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 excellent at determining o/c cell/s in batt- pulses go up greater with degree of o/c! have actually seen 1250 volts! Cut open, & broke down pos grid! in 1 cell-others nearly so!. how to recondition a wore out battery. Bevan - I would recommend fine-tuning the cadmium by making the cadmium you recovered from the NiCds the positive in an electroplating cell.
Utilize a tin wire or solder wire unfavorable. Source of power can be 12V battery. Place 220 ohm series resistor. The cadmium that gets plated onto the unfavorable will be dendritic and pure. The real voltage throughout the electroplating cell will be under 0. is it okay to recondition a car battery with it still connected. 5V. The green you explain would be nickel contamination.
Bevan - That's innovative! Why didn't I think about that before? I will attempt it. John - You're one wise gentleman, thanks for the info. Bevan - I think I may have at long last handled to figure out what cadmium sulfate does. It definitely electroplates out onto the unfavorable grid metal when the battery is deliberately pushed into regulated overcharge.
This helps the lead sulfate nearest the grids to become active again and to be transformed into lead and sulfate ions. Duplicated charging, discharging spreads the conductive environment gradually and gradually into the bulk of the lead sulfate. The process appears to have a limitation. recondition dead battery. It would appear the secret to attaining 100% desulfation is to determine how to get conduction to spread out into 100% of the sulfate.
Including gradually more simply creates dendrites and causes shorts. The explanations given by desulation merchants that insoluble sulfation undoubtedly coats the plates when batteries are used which their treatment strips it away is pure fantasy. The sulfate stays right where it is. It is transformed. While both favorable and negative plates can become sulfated, the favorable sulfation merely 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, wouldn't simply copper suffices? Afdhal- it is simply 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 most! Afdhal - No, copper and copper sulfate are not appropriate.
Cadmium has an electrochemical potential of -0. 4030V. Lead has an electrochemical capacity 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 placed 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 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, and so on are all far to unfavorable, the metals far too reactive in battery acid, for anything of advantage to take place.
Bevan - It is not a theory. I ran the experiments. Built lead-acid cells in glass jars. I observed and determined (do i need to charge car battery after battery recondition). 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 REALITY- your findings MUST be duplicated by other like minded persons- can't see that taking place just yet- still, there is hope.
Bevan - I personally could not care less what people opine about sulfation. I ran an experiment designed to answer yes or no, whether batteries can be desulfated. My experiment showed that one may get a quarter to a 3rd short-term recovery. I would not explain that as a "yes".
Others can quickly repeat my expermiment. Human nature being what it is, some individuals so dislike an unsightly fact getting in the way of a gorgeous story, their counter arguments will constantly be in words, not deeds. The base test: Desulfation remains a having a hard time industry. Something is not ideal. There is no conspiracy.
If you desire batteries to last longer, deal with them, assist them while they are still functional, do not fuss over them after they "signed off". We don't feed medication to dead people. 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, but adding Epsom salt (service= 8 teaspoonfuls Epsom salts dissolved in 1 pint distilled water) paired with a 3 day drip charge helped my truck battery maintain a better charge.
The battery carried out well through the winter after my treatment and is still going strong! I don't understand just how much longer it will live, but I will let you understand when it lastly passes away. Adios Shadmin - The part of the 1 pint of water that you handled to put into the battery helped; the three days additional drip charge helped; the Epsom salts pleased your belief - car battery reconditioning.
ALL the so-called solutions incl epson, alum, cadmium, etc, etc, etc ad infinitum not do anything!!! But normally harm!! What many posters like to believe is that THEIR!!! treatment made a difference!! BUT neglect all the other criteria of battery reaction incl temp, humidity etc in their effort to make sense of a complex subject!! (test and recondition car battery). The bare fact is that all automotive charge systems do not completely charge the l/a starter batt- however only around 14v- for several various factors.
Bevan - Where does the acid that raised your SG originated from? John- simply returned on line after week after altering ISP!!! The increased sg is because of the dollop in the 15 ml added of Inox Mx2 to each cell! IT certainly is NOT due to lowering sulfation & therefore raising sg!. is it okay to recondition a car battery with it still connected.