That is quite typical. The silliest thing you can do is to put all sort of sulfates into batteries in the hope of resolving a problem. Urban myth will never ever die. Pencil lead can contain some unusual compounds in addition to carbon (battery recondition). There are a lot of carbon powder producers. Vehicle tires have to do with 50% carbon.
Does not cost an arm and a leg. Afdhal- I get cadmium from used NiCd cells-aaa or aa sizes- such as found in solar garden lights- after a few years they are tossed out as NiCd is broken- simply cut around top crimp with hacksaw, unravel 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 acquire Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & emit toxic fumes- do outside -do not breathe vapours!!! When cadmium is totally dissolved( & sometimes the electrolyte cadmium mix is a beautiful green, depending upon quality of cadmium from cell maker!)- job done! Got ta state- the mix I have actually 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 up until now- 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 must be only lightly sulfated).
Still it is good 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!. how to reconditioning car battery. Bevan - I would recommend improving 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 actual voltage across the electroplating cell will be under 0. reconditioning a battery. 5V. The green you explain would be nickel contamination.
Bevan - That's creative! Why didn't I think about that prior to? I will try it. John - You're one clever gentleman, thanks for the details. Bevan - I believe I may have at long last handled to find 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 end up being active again and to be converted 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. how to restore a dead car battery. It would appear the trick to attaining 100% desulfation is to figure out how to get conduction to spread out into 100% of the sulfate.
Including progressively more merely creates dendrites and triggers shorts. The descriptions given 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 stays right where it is. It is converted. While both favorable and unfavorable plates can end up being sulfated, the positive sulfation just reverses when the battery is charged.
John - If I comprehend you correctly, did you suggested all the cadmium does is electroplating itself on the negative grid?If so, would not simply copper suffices? Afdhal- it is simply John's theory- but i would say cadmium does not simply plate itself- requirements 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 ideal.
Cadmium has an electrochemical capacity 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 just when a battery is put on gassing charge that the voltage at the negative plate favors 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, etc. are all far to unfavorable, the metals far too reactive in battery acid, for anything of advantage to happen.
Bevan - It is not a theory. I ran the experiments. Constructed lead-acid cells in glass jars. I observed and determined (how to recondition an old battery). 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 become TRUTH- your findings MUST be duplicated by other like minded persons- can't see that occurring right now- still, there is hope.
Bevan - I personally could not care less what people suggest about sulfation. I ran an experiment created to answer yes or no, whether batteries can be desulfated. My experiment showed that a person 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 dislike an unsightly reality getting in the method of a gorgeous story, their counter arguments will constantly remain in words, not deeds. The litmus test: Desulfation remains a having a hard time industry. Something is not best. There is no conspiracy.
If you desire batteries to last longer, deal with them, help them while they are still serviceable, don't fuss over them after they "signed off". We don't feed medication to dead individuals. Why do it to batteries? The experiment is described on "CAN BATTERIES BE BROUGHT BACK". Well, anyone can say what they desire about sulfation or desulfation, however including Epsom salt (service= 8 teaspoonfuls Epsom salts liquified in 1 pint distilled water) paired with a 3 day drip charge assisted my truck battery maintain a 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, but I will let you understand when it lastly passes away. Adios Shadmin - The portion of the 1 pint of water that you managed to put into the battery helped; the three days extra trickle charge assisted; the Epsom salts satisfied your belief - how to restore a car battery.
ALL the so-called remedies incl epson, alum, cadmium, etc, etc, etc advertisement infinitum not do anything!!! But usually harm!! What many posters like to believe is that THEIR!!! treatment made a difference!! BUT ignore all the other parameters of battery reaction incl temperature, humidity etc in their attempt to understand a complicated subject!! (what is battery reconditioning). The bare reality is that all automotive charge systems do not completely charge the l/a starter batt- however just around 14v- for a number of various factors.
Bevan - Where does the acid that raised your SG originated from? John- just returned 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 definitely is NOT due to lowering sulfation & therefore raising sg!. recondition your old battery.