That is quite typical. The silliest thing you can do is to put all type of sulfates into batteries in the hope of fixing an issue. Urban myth will never pass away. Pencil lead can contain some weird compounds in addition to carbon (auto battery reconditioning). There are plenty of carbon powder manufacturers. Automobile 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, decipher s/s case with cutter, withdraw contents- outer foil is cadmium, inner foil is nickel, & some solid electrolyte & seperator- all wound in spiral pattern.
To get Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & release toxic fumes- do outside -do not breathe vapours!!! When cadmium is totally liquified( & sometimes the electrolyte cadmium mix is a lovely green, depending upon quality of cadmium from cell maker!)- task done! Got ta say- the mix I have added to batt cells does not appear to assist! In reality- I got ta state the ONLY thing I used that worked was INOX MX2( in 1 batt up until now- 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 should be just gently sulfated).
Still it is proficient 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 almost so!. reconditioning a battery. Bevan - I would suggest fine-tuning the cadmium by making the cadmium you recuperated from the NiCds the favorable in an electroplating cell.
Use a tin wire or solder wire negative. Power source can be 12V battery. Insert 220 ohm series resistor. The cadmium that gets plated onto the negative will be dendritic and pure. The actual voltage throughout the electroplating cell will be under 0. how do you recondition a dead car battery. 5V. The green you describe would be nickel contamination.
Bevan - That's innovative! Why didn't I think of that prior to? I will attempt it. John - You're one wise gentleman, thanks for the information. Bevan - I think I may have at long last handled to determine what cadmium sulfate does. It certainly electroplates out onto the unfavorable grid metal when the battery is intentionally pushed into controlled overcharge.
This assists the lead sulfate nearest the grids to end up being active once again and to be transformed into lead and sulfate ions. Duplicated charging, releasing spreads the conductive environment slowly and progressively into the bulk of the lead sulfate. The procedure seems to have a limitation. test and recondition car battery. It would appear the secret to attaining 100% desulfation is to figure out how to get conduction to spread out into 100% of the sulfate.
Including gradually more just produces dendrites and triggers shorts. The descriptions provided by desulation merchants that insoluble sulfation undoubtedly coats the plates when batteries are used which their treatment strips it away is pure dream. The sulfate stays right where it is. It is transformed. While both positive and negative plates can end up being 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 negative grid?If so, wouldn't simply copper is good enough? Afdhal- it is simply 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 a lot of! Afdhal - No, copper and copper sulfate are not appropriate.
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 only when a battery is placed on gassing charge that the voltage at the negative plate favors electroplating.
Copper has an electrochemical possible Cu of +0. 5210V and Cu2 of +0. 3419V. Copper will merely 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, salt, etc. are all far to unfavorable, the metals far too reactive in battery acid, for anything of benefit to happen.
Bevan - It is not a theory. I ran the experiments. Developed lead-acid cells in glass containers. I observed and measured (recondition 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 end up being FACT- your findings MUST be reproduced by other like minded persons- can't see that happening just yet- still, there is hope.
Bevan - I personally might 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 showed that a person may get a quarter to a 3rd short-term recovery. I would not explain that as a "yes".
Others can easily duplicate my expermiment. Humanity being what it is, some people so do not like an awful truth obstructing of a beautiful story, their counter arguments will always remain in words, not deeds. The litmus test: Desulfation stays a struggling market. Something is not right. There is no conspiracy.
If you want batteries to last longer, work on them, help them while they are still functional, do not fuss over them after they "signed off". We don't feed medicine to dead people. Why do it to batteries? The experiment is described on "CAN BATTERIES BE RESTORED". Well, anybody can say what they want about sulfation or desulfation, however adding Epsom salt (service= 8 teaspoonfuls Epsom salts dissolved in 1 pint distilled water) combined with a 3 day trickle charge helped my truck battery maintain a much better charge.
The battery performed 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 lastly dies. Adios Shadmin - The portion of the 1 pint of water that you managed to take into the battery assisted; the three days additional drip charge helped; the Epsom salts satisfied your belief - battery reconditioning.
ALL the so-called solutions incl epson, alum, cadmium, etc, etc, etc ad infinitum not do anything!!! However typically hurt!! What numerous posters like to think is that THEIR!!! treatment made a distinction!! BUT overlook all the other parameters of battery action incl temp, humidity etc in their attempt to make sense of a complex subject!! (how to restore a dead car battery). The bare reality is that all automobile charge systems do not completely charge the l/a starter batt- but just around 14v- for a number of different factors.
Bevan - Where does the acid that raised your SG come from? John- just returned on line after week after changing ISP!!! The increased sg is due to the dollop in the 15 ml added of Inox Mx2 to each cell! IT definitely is NOT due to lowering sulfation & thus raising sg!. how to restore a dead battery car.