That is pretty common. The silliest thing you can do is to put all type of sulfates into batteries in the hope of fixing an issue. Urban legends will never pass away. Pencil lead can contain some weird substances in addition to carbon (reconditioning old battery). There are a lot of carbon powder manufacturers. Cars and truck tires are about 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 couple of years they are thrown away as NiCd is used out- simply cut around top crimp with hacksaw, decipher s/s case with cutter, withdraw contents- outer foil is cadmium, inner foil is nickel, & some strong electrolyte & seperator- all wound in spiral pattern.
To obtain Cadmium Sulphate, boil up some electrolyte- drop cadmium in- will bubble up & release toxic fumes- do outside -do not breathe vapours!!! When cadmium is completely dissolved( & sometimes the electrolyte cadmium mix is a lovely green, depending on quality of cadmium from cell maker!)- task done! Got ta state- the mix I have actually added to batt cells does not appear to help! In fact- I got ta state 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 verify yes or no! Apart from that, the other thing is that the batt itself should be only lightly sulfated).
Still it is proficient 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 almost so!. reconditioning a 12 volt truck battery. Bevan - I would suggest improving 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. 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 actual voltage throughout the electroplating cell will be under 0. how to recondition any battery. 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 wise gentleman, thanks for the info. Bevan - I think 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 pressed into regulated 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 gradually and gradually into the bulk of the lead sulfate. The procedure seems to have a limitation. auto battery reconditioning. It would appear the trick to accomplishing 100% desulfation is to find out how to get conduction to spread out into 100% of the sulfate.
Adding gradually more simply creates dendrites and causes shorts. The descriptions given by desulation merchants that insoluble sulfation inevitably coats the plates when batteries are utilized which 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 end up being sulfated, the favorable sulfation just reverses when the battery is charged.
John - If I comprehend you correctly, did you indicated all the cadmium does is electroplating itself on the unfavorable grid?If so, wouldn't just copper is good enough? Afdhal- it is simply John's theory- but i would say 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 most! Afdhal - No, copper and copper sulfate are not appropriate.
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 placed on gassing charge that the voltage at the unfavorable 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, 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 negative, the metals far too reactive in battery acid, for anything of advantage to take place.
Bevan - It is not a theory. I ran the experiments. Developed lead-acid cells in glass jars. I observed and measured (how do you recondition a 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 replicated by other like minded individuals- can't see that occurring just yet- still, there is hope.
Bevan - I personally could not care less what individuals suggest about sulfation. I ran an experiment developed to respond to yes or no, whether batteries can be desulfated. My experiment revealed that one may get a quarter to a third 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 dislike an unsightly reality getting in the method of a gorgeous story, their counter arguments will always remain in words, not deeds. The base test: Desulfation stays a struggling industry. Something is wrong. There is no conspiracy.
If you want batteries to last longer, deal with them, assist them while they are still functional, don't fuss over them after they "signed off". We don't 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 want about sulfation or desulfation, but including Epsom salt (option= 8 teaspoonfuls Epsom salts liquified in 1 pint pure water) paired with a 3 day drip charge helped my truck battery retain a better charge.
The battery carried out well through the winter after my treatment and is still going strong! I do not understand just how much longer it will live, however I will let you know when it finally passes away. Adios Shadmin - The portion of the 1 pint of water that you managed to put into the battery assisted; the 3 days additional trickle charge assisted; the Epsom salts satisfied your belief - reconditioning a battery.
ALL the so-called remedies incl epson, alum, cadmium, etc, etc, etc ad infinitum do ABSOLUTELY NOTHING!!! But normally harm!! What lots of posters like to think is that THEIR!!! treatment made a distinction!! BUT neglect all the other criteria of battery action incl temp, humidity etc in their effort to understand a complex subject!! (battery reconditioning equipment). The bare reality is that all vehicle charge systems do not fully charge the l/a starter batt- but only around 14v- for several various factors.
Bevan - Where does the acid that raised your SG come from? John- simply 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 decreasing sulfation & thus raising sg!. test and recondition car battery.