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That is pretty typical. The silliest thing you can do is to put all kinds of sulfates into batteries in the hope of resolving a problem. Urban legends will never pass away. Pencil lead can consist of some strange substances in addition to carbon (reconditioning a 12 volt truck battery). There are lots of carbon powder makers. Vehicle tyres 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 few years they are thrown away as NiCd is used out- just cut around top crimp with hacksaw, unwind 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 get Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & give off poisonous fumes- do outside -do not breathe vapours!!! When cadmium is entirely liquified( & often the electrolyte cadmium mix is a lovely green, depending upon quality of cadmium from cell maker!)- job done! Got ta state- the mix I have actually contributed to batt cells does not seem to assist! 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; & try; in other batts to validate yes or no! Apart from that, the other thing is that the batt itself must be only lightly sulfated).
Still it is excellent at recognizing o/c cell/s in batt- pulses go up greater with degree of o/c! have actually seen 1250 volts! Cut open, & broke down pos grid! in 1 cell-others practically so!. car battery reconditioning. Bevan - I would recommend refining the cadmium by making the cadmium you recuperated from the NiCds the positive in an electroplating cell.
Utilize 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 unfavorable will be dendritic and pure. The real voltage across the electroplating cell will be under 0. is it okay to recondition a car battery with it still connected. 5V. The green you describe would be nickel contamination.
Bevan - That's innovative! Why didn't I consider that prior to? I will attempt it. John - You're one smart gentleman, thanks for the info. Bevan - I believe I may have at long last managed to figure out what cadmium sulfate does. It absolutely electroplates out onto the unfavorable 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 converted into lead and sulfate ions. Repeated charging, discharging spreads the conductive environment slowly and progressively into the bulk of the lead sulfate. The process seems to have a limitation. how do you recondition a dead car battery. It would appear the trick to attaining 100% desulfation is to figure out how to get conduction to spread into 100% of the sulfate.
Including gradually more merely develops dendrites and triggers shorts. The explanations given by desulation merchants that insoluble sulfation undoubtedly coats the plates when batteries are utilized and that their treatment strips it away is pure dream. The sulfate remains right where it is. It is transformed. While both favorable and unfavorable plates can become sulfated, the positive sulfation simply reverses when the battery is charged.
John - If I understand you correctly, did you meant all the cadmium does is electroplating itself on the unfavorable grid?If so, would not just copper suffices? Afdhal- it is just 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 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 put on gassing charge that the voltage at the unfavorable plate prefers electroplating.
Copper has an electrochemical prospective Cu of +0. 5210V and Cu2 of +0. 3419V. Copper will simply plate onto the negatives regardless and stay there, triggering the plates to gas and to self discharge and to sulfate. The electrochemical potentials of aluminum, magnesium, potassium, salt, etc. are all far to unfavorable, 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 containers. I observed and measured (reconditioning a 12 volt truck battery). John- to my knowledge, what you have 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 duplicated by other like minded individuals- can't see that happening just yet- still, there is hope.
Bevan - I personally could not care less what individuals suggest about sulfation. I ran an experiment designed to answer 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 easily repeat my expermiment. Humanity being what it is, some people so do not like an ugly fact obstructing 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 ideal. There is no conspiracy.
If you desire batteries to last longer, deal with them, help them while they are still functional, do not fuss over them after they "signed off". We do not feed medication to dead individuals. Why do it to batteries? The experiment is described on "CAN BATTERIES BE RESTORED". Well, anyone can state what they desire about sulfation or desulfation, however including Epsom salt (solution= 8 teaspoonfuls Epsom salts dissolved in 1 pint pure water) combined with a 3 day drip charge assisted my truck battery maintain a much better charge.
The battery performed well through the winter season after my treatment and is still going strong! I don't know just how much longer it will live, however I will let you know when it lastly dies. Adios Shadmin - The part of the 1 pint of water that you handled to take into the battery helped; the 3 days extra trickle charge helped; the Epsom salts pleased your belief - reconditioning a 12 volt truck battery.
ALL the so-called treatments incl epson, alum, cadmium, etc, etc, etc advertisement infinitum do NOTHING!!! However generally harm!! What lots of posters like to believe is that THEIR!!! treatment made a difference!! BUT ignore all the other criteria of battery response incl temp, humidity etc in their effort to understand a complicated subject!! (recondition dead battery). The bare truth is that all vehicle charge systems do not completely charge the l/a starter batt- however only around 14v- for a number of different factors.
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 because of the dollop in the 15 ml included of Inox Mx2 to each cell! IT definitely is NOT due to lowering sulfation & hence raising sg!. how to recondition a 12 volt battery.
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How Do You Recondition A Battery
How To Recondition A 12 Volt Battery