That is pretty typical. The silliest thing you can do is to put all type of sulfates into batteries in the hope of resolving an issue. Urban legends will never pass away. Pencil lead can consist of some weird substances in addition to carbon (how to recondition a battery). There are a lot of carbon powder manufacturers. Car 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 thrown away as NiCd is broken- just cut around top crimp with hacksaw, decipher s/s case with cutter, withdraw contents- external 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 toxic fumes- do outside -do not breathe vapours!!! When cadmium is completely dissolved( & in some cases the electrolyte cadmium mix is a charming green, depending on quality of cadmium from cell maker!)- job done! Got ta say- the mix I have added to batt cells does not seem to assist! In fact- I got ta state 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 validate yes or no! Apart from that, the other thing is that the batt itself must be just gently sulfated).
Still it is good at identifying o/c cell/s in batt- pulses go up greater with degree of o/c! have actually seen 1250 volts! Cut open, & disintegrated pos grid! in 1 cell-others almost so!. recondition a battery. Bevan - I would recommend refining the cadmium by making the cadmium you recovered from the NiCds the positive in an electroplating cell.
Use a tin wire or solder wire negative. 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 actual voltage across the electroplating cell will be under 0. how to recondition a dead battery. 5V. The green you explain would be nickel contamination.
Bevan - That's innovative! Why didn't I think of that before? I will try it. John - You're one smart gentleman, thanks for the details. Bevan - I believe I might 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 pushed 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, releasing spreads the conductive environment slowly and gradually into the bulk of the lead sulfate. The procedure appears to have a limit. 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.
Adding progressively more simply produces dendrites and triggers shorts. The explanations provided by desulation merchants that insoluble sulfation inevitably coats the plates when batteries are used which their treatment strips it away is pure fantasy. The sulfate remains right where it is. It is converted. While both positive and negative plates can end up being sulfated, the positive sulfation simply reverses when the battery is charged.
John - If I comprehend you properly, did you indicated all the cadmium does is electroplating itself on the unfavorable grid?If so, would not simply copper suffices? Afdhal- it is just John's theory- however i would state cadmium does not just plate itself- requirements driving- so does copper- BUT copper is a non laster in H2SO4! As are most metals! Lead lasts longer than a lot of! Afdhal - No, copper and copper sulfate are not ideal.
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 only when a battery is placed on gassing charge that the voltage at the unfavorable 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 potentials of aluminum, magnesium, potassium, sodium, etc. are all far to negative, the metals far too reactive in battery acid, for anything of advantage to occur.
Bevan - It is not a theory. I ran the experiments. Developed lead-acid cells in glass jars. I observed and determined (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 end up being TRUTH- your findings MUST be reproduced by other like minded persons- 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 developed to address yes or no, whether batteries can be desulfated. My experiment showed that one might get a quarter to a third short-term healing. I would not explain that as a "yes".
Others can quickly duplicate my expermiment. Human nature being what it is, some people so dislike an ugly reality obstructing of a gorgeous story, their counter arguments will always remain in words, not deeds. The litmus test: Desulfation stays a struggling industry. Something is not right. There is no conspiracy.
If you desire batteries to last longer, deal with them, assist them while they are still serviceable, don't fuss over them after they "signed off". We do not feed medicine to dead individuals. Why do it to batteries? The experiment is described on "CAN BATTERIES BE RESTORED". Well, anybody can state what they desire about sulfation or desulfation, but including Epsom salt (solution= 8 teaspoonfuls Epsom salts liquified in 1 pint distilled water) combined with a 3 day trickle charge assisted my truck battery keep a better charge.
The battery performed well through the winter after my treatment and is still going strong! I don't 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 put into the battery assisted; the 3 days additional trickle charge assisted; the Epsom salts satisfied your belief - how do you recondition a battery.
ALL the so-called remedies incl epson, alum, cadmium, etc, etc, etc advertisement infinitum do NOTHING!!! But generally damage!! What numerous posters like to think is that THEIR!!! treatment made a difference!! BUT overlook all the other criteria of battery reaction incl temp, humidity etc in their attempt to make sense of a complicated subject!! (how to recondition a dead car battery). The bare reality is that all automobile charge systems do not totally charge the l/a starter batt- but 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 changing ISP!!! The increased sg is because of the dollop in the 15 ml included of Inox Mx2 to each cell! IT absolutely is NOT due to reducing sulfation & hence raising sg!. car battery reconditioning.