That is quite common. The silliest thing you can do is to put all kinds of sulfates into batteries in the hope of solving an issue. Urban myth will never ever pass away. Pencil lead can include some strange compounds in addition to carbon (how to recondition a wore out 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 utilized NiCd cells-aaa or aa sizes- such as discovered in solar garden lights- after a couple of years they are thrown out as NiCd is worn out- simply cut around top crimp with hacksaw, decipher s/s case with cutter, withdraw contents- external foil is cadmium, inner foil is nickel, & some solid electrolyte & seperator- all wound in spiral pattern.
To obtain Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & offer off harmful fumes- do outdoors -do not breathe vapours!!! When cadmium is completely liquified( & often the electrolyte cadmium mix is a beautiful green, depending on quality of cadmium from cell maker!)- task done! Got ta state- the mix I have actually contributed to batt cells does not seem to help! In truth- 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; & shot; 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 excellent at determining o/c cell/s in batt- pulses increase higher with degree of o/c! have actually seen 1250 volts! Cut open, & disintegrated pos grid! in 1 cell-others nearly so!. how to restore a dead battery car. Bevan - I would recommend fine-tuning the cadmium by making the cadmium you recovered from the NiCds the favorable in an electroplating cell.
Use a tin wire or solder wire unfavorable. Power source 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 restore a car 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 attempt it. John - You're one clever gentleman, thanks for the info. Bevan - I believe I might have at long last handled to find out what cadmium sulfate does. It absolutely electroplates out onto the unfavorable grid metal when the battery is deliberately pushed into controlled overcharge.
This assists the lead sulfate nearest the grids to become active once again and to be transformed 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. battery recondition. It would appear the trick to achieving 100% desulfation is to find out how to get conduction to spread out into 100% of the sulfate.
Including progressively more merely produces dendrites and triggers shorts. The descriptions given by desulation merchants that insoluble sulfation undoubtedly coats the plates when batteries are used 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 simply reverses when the battery is charged.
John - If I comprehend you properly, did you suggested all the cadmium does is electroplating itself on the unfavorable grid?If so, wouldn't simply copper is good enough? Afdhal- it is just John's theory- but i would state 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 most! Afdhal - No, copper and copper sulfate are not appropriate.
Cadmium has an electrochemical capacity of -0. 4030V. Lead has an electrochemical potential of -0. 1262V. The electrochemical capacity of cadmium is such that it avoids electroplating when a battery is standing. It is only when a battery is placed 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 just 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, sodium, etc. are all far to negative, the metals far too reactive in battery acid, for anything of advantage to happen.
Bevan - It is not a theory. I ran the experiments. Built lead-acid cells in glass containers. I observed and measured (how to recondition a 12 volt battery). 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 FACT- your findings MUST be reproduced by other like minded individuals- can't see that taking place right now- still, there is hope.
Bevan - I personally might not care less what individuals believe about sulfation. I ran an experiment created to respond to yes or no, whether batteries can be desulfated. My experiment showed that one might get a quarter to a 3rd short-term healing. I would not describe that as a "yes".
Others can quickly duplicate my expermiment. Humanity being what it is, some people so dislike an unsightly reality obstructing of a lovely story, their counter arguments will always remain in words, not deeds. The base test: Desulfation stays a having a hard time market. Something is not right. There is no conspiracy.
If you desire batteries to last longer, work on them, assist them while they are still functional, don't 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, anybody can say what they want about sulfation or desulfation, however including Epsom salt (solution= 8 teaspoonfuls Epsom salts dissolved in 1 pint pure water) paired with a 3 day drip charge helped my truck battery retain a much better charge.
The battery carried out well through the winter season after my treatment and is still going strong! I do not know just how much longer it will live, however I will let you know when it lastly passes away. Adios Shadmin - The part of the 1 pint of water that you managed to take into the battery helped; the three days additional drip charge assisted; the Epsom salts satisfied your belief - is it okay to recondition a car battery with it still connected.
ALL the so-called treatments incl epson, alum, cadmium, etc, etc, etc advertisement infinitum do NOTHING!!! But generally harm!! What numerous posters like to think is that THEIR!!! treatment made a difference!! BUT ignore all the other parameters of battery reaction incl temperature, humidity etc in their effort to understand a complex subject!! (recondition your old battery). The bare truth is that all automotive charge systems do not completely charge the l/a starter batt- however just around 14v- for numerous various reasons.
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 because of the dollop in the 15 ml added of Inox Mx2 to each cell! IT definitely is NOT due to minimizing sulfation & hence raising sg!. reconditioning car battery.