That is quite typical. The silliest thing you can do is to put all sort of sulfates into batteries in the hope of resolving an issue. Urban myth will never die. Pencil lead can consist of some odd compounds in addition to carbon (reconditioning a 12 volt truck battery). There are plenty of carbon powder makers. Cars and truck 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 discovered in solar garden lights- after a few years they are tossed out as NiCd is broken- just cut around leading 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 acquire Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & release poisonous fumes- do outside -do not breathe vapours!!! When cadmium is completely dissolved( & in some cases the electrolyte cadmium mix is a lovely green, depending on quality of cadmium from cell maker!)- task done! Got ta say- the mix I have actually added to batt cells does not seem to assist! In truth- I got ta say the ONLY thing I utilized that worked was INOX MX2( in 1 batt so far- I will get some more MX2 &try; & try; in other batts to confirm yes or no! Apart from that, the other thing is that the batt itself need to be only gently sulfated).
Still it is good at determining o/c cell/s in batt- pulses increase higher with degree of o/c! have seen 1250 volts! Cut open, & broke down pos grid! in 1 cell-others practically so!. how to recondition a wore out battery. Bevan - I would suggest refining 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. Source of power 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. high frequency battery reconditioning. 5V. The green you explain would be nickel contamination.
Bevan - That's imaginative! Why didn't I think about that before? I will attempt it. John - You're one wise gentleman, thanks for the info. Bevan - I believe I might have at long last managed to determine what cadmium sulfate does. It absolutely electroplates out onto the unfavorable grid metal when the battery is deliberately pressed into controlled overcharge.
This helps the lead sulfate nearest the grids to become active again and to be transformed into lead and sulfate ions. Duplicated charging, discharging spreads the conductive environment gradually and gradually into the bulk of the lead sulfate. The procedure seems to have a limit. reconditioning car battery. It would appear the secret to achieving 100% desulfation is to figure out how to get conduction to spread into 100% of the sulfate.
Including progressively more just creates dendrites and causes shorts. The descriptions offered 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 transformed. While both favorable 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 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 potential 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 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 stay there, causing the plates to gas and to self discharge and to sulfate. The electrochemical capacities of aluminum, magnesium, potassium, sodium, etc. are all far to unfavorable, the metals far too reactive in battery acid, for anything of benefit to occur.
Bevan - It is not a theory. I ran the experiments. Developed lead-acid cells in glass containers. I observed and determined (what is in battery reconditioning solution). 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 simply yet- still, there is hope.
Bevan - I personally could not care less what individuals believe about sulfation. I ran an experiment developed to answer yes or no, whether batteries can be desulfated. My experiment revealed that one might get a quarter to a 3rd short-term healing. I would not describe that as a "yes".
Others can easily duplicate my expermiment. Human nature being what it is, some people so do not like an ugly reality obstructing of a gorgeous story, their counter arguments will constantly remain in words, not deeds. The litmus test: Desulfation stays a having a hard time market. Something is not best. There is no conspiracy.
If you desire batteries to last longer, deal with them, help 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 RESTORED". Well, anyone can state what they desire about sulfation or desulfation, however including Epsom salt (solution= 8 teaspoonfuls Epsom salts liquified in 1 pint pure water) coupled with a 3 day trickle 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 know just how much longer it will live, however I will let you understand when it finally dies. Adios Shadmin - The portion of the 1 pint of water that you handled to take into the battery assisted; the three days extra trickle charge helped; the Epsom salts pleased your belief - how do you recondition a car battery.
ALL the so-called treatments incl epson, alum, cadmium, etc, etc, etc ad infinitum not do anything!!! However usually damage!! What numerous posters like to think is that THEIR!!! treatment made a distinction!! BUT ignore all the other specifications of battery action incl temp, humidity etc in their effort to make sense of a complex subject!! (what is battery reconditioning). The bare truth is that all automobile charge systems do not fully charge the l/a starter batt- however just around 14v- for numerous various factors.
Bevan - Where does the acid that raised your SG come from? John- just got back on line after week after altering ISP!!! The increased sg is due to the dollop in the 15 ml added of Inox Mx2 to each cell! IT certainly is NOT due to reducing sulfation & therefore raising sg!. recondition old battery.