That is quite typical. The silliest thing you can do is to put all sort of sulfates into batteries in the hope of fixing a problem. Urban myth will never ever die. Pencil lead can consist of some unusual compounds in addition to carbon (how do you recondition a battery). There are lots of carbon powder makers. Vehicle tires have to do with 50% carbon.
Does not cost an arm and a leg. Afdhal- I get cadmium from utilized NiCd cells-aaa or aa sizes- such as found in solar garden lights- after a few years they are tossed out as NiCd is worn- merely cut around top 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 acquire Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & release hazardous fumes- do outdoors -do not breathe vapours!!! When cadmium is totally dissolved( & sometimes the electrolyte cadmium mix is a lovely green, depending on quality of cadmium from cell maker!)- job done! Got ta state- the mix I have added to batt cells does not seem to assist! In fact- I got ta say 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 verify yes or no! Apart from that, the other thing is that the batt itself need to be only gently sulfated).
Still it is excellent at determining o/c cell/s in batt- pulses go up greater with degree of o/c! have seen 1250 volts! Cut open, & disintegrated pos grid! in 1 cell-others nearly so!. test and recondition car battery. Bevan - I would suggest refining the cadmium by making the cadmium you recuperated from the NiCds the positive in an electroplating cell.
Use a tin wire or solder wire unfavorable. 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. how to recondition a car battery. 5V. The green you describe would be nickel contamination.
Bevan - That's creative! Why didn't I consider that before? I will attempt it. John - You're one wise gentleman, thanks for the information. Bevan - I believe I may have at long last handled to determine what cadmium sulfate does. It definitely electroplates out onto the negative grid metal when the battery is intentionally pushed into controlled 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 slowly and gradually into the bulk of the lead sulfate. The procedure appears to have a limitation. how do you recondition a car battery. It would appear the secret to achieving 100% desulfation is to figure out how to get conduction to spread into 100% of the sulfate.
Including gradually more just develops dendrites and causes shorts. The explanations 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 transformed. While both positive and negative plates can become sulfated, the positive sulfation just reverses when the battery is charged.
John - If I comprehend you correctly, did you meant all the cadmium does is electroplating itself on the unfavorable grid?If so, would not simply copper is good enough? Afdhal- it is simply John's theory- however 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 the majority of! Afdhal - No, copper and copper sulfate are not suitable.
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 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 simply 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, sodium, etc. are all far to unfavorable, the metals far too reactive in battery acid, for anything of benefit to occur.
Bevan - It is not a theory. I ran the experiments. Constructed lead-acid cells in glass jars. I observed and determined (auto 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 end up being TRUTH- your findings MUST be replicated by other like minded persons- can't see that taking place just yet- still, there is hope.
Bevan - I personally might not care less what people 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 recovery. I would not describe that as a "yes".
Others can quickly repeat my expermiment. Human nature being what it is, some people so dislike an unsightly fact getting in the way of a stunning story, their counter arguments will constantly be in words, not deeds. The litmus test: Desulfation remains a struggling industry. Something is not right. There is no conspiracy.
If you want batteries to last longer, deal with them, help 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 explained on "CAN BATTERIES BE RESTORED". Well, anyone can say what they want about sulfation or desulfation, however including Epsom salt (option= 8 teaspoonfuls Epsom salts dissolved in 1 pint pure water) paired with a 3 day trickle charge helped my truck battery retain a much better charge.
The battery carried out well through the winter after my treatment and is still going strong! I do not understand how much longer it will live, however I will let you know when it finally dies. Adios Shadmin - The portion of the 1 pint of water that you managed to take into the battery helped; the 3 days extra trickle charge assisted; the Epsom salts satisfied your belief - battery reconditioning.
ALL the so-called solutions incl epson, alum, cadmium, etc, etc, etc advertisement infinitum not do anything!!! However normally harm!! What numerous posters like to think is that THEIR!!! treatment made a difference!! BUT ignore all the other parameters of battery action incl temperature, humidity etc in their attempt to make sense of a complex subject!! (how to recondition an old battery). The bare reality is that all vehicle charge systems do not totally charge the l/a starter batt- however just around 14v- for several various factors.
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 definitely is NOT due to reducing sulfation & therefore raising sg!. how to restore a dead car battery.