That is pretty typical. The silliest thing you can do is to put all kinds of sulfates into batteries in the hope of solving an issue. Urban legends will never die. Pencil lead can include some odd compounds in addition to carbon (recondition battery). There are lots of carbon powder manufacturers. Automobile 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 thrown away as NiCd is worn out- just cut around top crimp with hacksaw, unravel 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 get Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & emit hazardous fumes- do outdoors -do not breathe vapours!!! When cadmium is completely dissolved( & in some cases the electrolyte cadmium mix is a beautiful green, depending on quality of cadmium from cell maker!)- job done! Got ta say- the mix I have contributed to batt cells does not seem to assist! 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; & shot; in other batts to verify yes or no! Apart from that, the other thing is that the batt itself must be only gently sulfated).
Still it is proficient at identifying 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 restore a dead car battery. Bevan - I would recommend refining the cadmium by making the cadmium you recuperated from the NiCds the favorable in an electroplating cell.
Use 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 negative will be dendritic and pure. The real voltage across the electroplating cell will be under 0. how to recondition an old battery. 5V. The green you explain 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 clever gentleman, thanks for the details. Bevan - I believe I may have at long last managed to find out what cadmium sulfate does. It definitely electroplates out onto the negative grid metal when the battery is intentionally pressed into regulated overcharge.
This assists the lead sulfate nearest the grids to become active once again and to be converted into lead and sulfate ions. Repeated charging, discharging spreads the conductive environment gradually and gradually into the bulk of the lead sulfate. The process seems to have a limitation. how to recondition a wore out battery. It would appear the trick to attaining 100% desulfation is to determine how to get conduction to spread into 100% of the sulfate.
Including progressively more just develops dendrites and triggers shorts. The descriptions offered by desulation merchants that insoluble sulfation undoubtedly 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 positive and unfavorable plates can become sulfated, the positive sulfation merely reverses when the battery is charged.
John - If I comprehend you properly, did you indicated all the cadmium does is electroplating itself on the negative grid?If so, wouldn't just copper suffices? Afdhal- it is simply John's theory- however 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 many! Afdhal - No, copper and copper sulfate are not appropriate.
Cadmium has an electrochemical capacity of -0. 4030V. Lead has an electrochemical capacity of -0. 1262V. The electrochemical potential 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 unfavorable 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, salt, etc. are all far to negative, the metals far too reactive in battery acid, for anything of benefit to occur.
Bevan - It is not a theory. I ran the experiments. Built lead-acid cells in glass jars. I observed and determined (what is 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 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 designed to address 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 quickly duplicate my expermiment. Human nature being what it is, some individuals so dislike an awful fact getting in the method of a stunning story, their counter arguments will always remain in words, not deeds. The base test: Desulfation stays a having a hard time industry. Something is not right. There is no conspiracy.
If you desire batteries to last longer, deal with them, help them while they are still serviceable, do not fuss over them after they "signed off". We do not feed medicine to dead people. Why do it to batteries? The experiment is described on "CAN BATTERIES BE RESTORED". Well, anybody can say what they want about sulfation or desulfation, but adding 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 much better charge.
The battery performed well through the winter after my treatment and is still going strong! I do not know 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 handled to take into the battery assisted; the three days extra drip charge helped; the Epsom salts pleased your belief - recondition your old battery.
ALL the so-called solutions incl epson, alum, cadmium, etc, etc, etc advertisement infinitum not do anything!!! However usually damage!! What many posters like to think is that THEIR!!! treatment made a difference!! BUT ignore all the other criteria of battery reaction incl temp, humidity etc in their attempt to make sense of a complicated subject!! (do i need to charge car battery after battery recondition). The bare fact is that all automobile charge systems do not fully charge the l/a starter batt- however just around 14v- for several various reasons.
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 due to the dollop in the 15 ml included of Inox Mx2 to each cell! IT absolutely is NOT due to decreasing sulfation & therefore raising sg!. car battery reconditioning.