That is quite typical. The silliest thing you can do is to put all sort of sulfates into batteries in the hope of fixing an issue. Urban myth will never ever die. Pencil lead can consist of some unusual compounds in addition to carbon (how to recondition any battery). There are plenty of carbon powder manufacturers. Cars and truck tyres have to do with 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 tossed out as NiCd is broken- merely cut around top crimp with hacksaw, unravel 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 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 liquified( & sometimes the electrolyte cadmium mix is a beautiful green, depending on quality of cadmium from cell maker!)- job done! Got ta state- the mix I have actually added to batt cells does not seem to assist! In reality- 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 confirm yes or no! Apart from that, the other thing is that the batt itself should be only lightly sulfated).
Still it is good at recognizing 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 practically so!. reconditioning car battery. Bevan - I would suggest fine-tuning the cadmium by making the cadmium you recovered from the NiCds the positive in an electroplating cell.
Utilize 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 negative will be dendritic and pure. The real voltage across the electroplating cell will be under 0. how to recondition a 12v battery. 5V. The green you describe would be nickel contamination.
Bevan - That's creative! Why didn't I believe of that before? I will attempt it. John - You're one clever gentleman, thanks for the details. Bevan - I think I might have at long last handled to determine what cadmium sulfate does. It absolutely electroplates out onto the unfavorable grid metal when the battery is deliberately pushed into regulated 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 appears to have a limitation. recondition battery guide. It would appear the trick to accomplishing 100% desulfation is to determine how to get conduction to spread into 100% of the sulfate.
Adding gradually more merely creates dendrites and causes shorts. The explanations offered by desulation merchants that insoluble sulfation inevitably 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 positive and unfavorable plates can become sulfated, the positive sulfation just reverses when the battery is charged.
John - If I understand you properly, did you implied all the cadmium does is electroplating itself on the negative grid?If so, wouldn't just 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 potential of -0. 4030V. Lead has an electrochemical capacity 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 placed on gassing charge that the voltage at the negative plate favors electroplating.
Copper has an electrochemical prospective Cu of +0. 5210V and Cu2 of +0. 3419V. Copper will merely 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, sodium, 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. Constructed lead-acid cells in glass jars. I observed and determined (reconditioning old battery). 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 FACT- your findings MUST be duplicated 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 opine 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 healing. I would not describe that as a "yes".
Others can easily repeat my expermiment. Human nature being what it is, some people so dislike an ugly truth getting in the method of a gorgeous story, their counter arguments will constantly remain in words, not deeds. The litmus test: Desulfation remains a struggling market. Something is wrong. There is no conspiracy.
If you desire batteries to last longer, work on them, help them while they are still functional, don't 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 BROUGHT BACK". Well, anybody can state what they want about sulfation or desulfation, but including Epsom salt (option= 8 teaspoonfuls Epsom salts dissolved 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 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 portion of the 1 pint of water that you handled to take into the battery helped; the three days additional trickle charge helped; the Epsom salts pleased your belief - automotive battery reconditioning.
ALL the so-called treatments incl epson, alum, cadmium, etc, etc, etc advertisement infinitum do ABSOLUTELY NOTHING!!! However usually hurt!! What many posters like to think is that THEIR!!! treatment made a difference!! BUT ignore all the other criteria of battery action incl temperature, humidity etc in their attempt to make sense of a complicated subject!! (what is battery reconditioning). The bare reality is that all automobile charge systems do not totally 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 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 certainly is NOT due to lowering sulfation & thus raising sg!. how do you recondition a dead battery.