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"Pete Verdon" d wrote in message ... Capt. Neal® wrote: http://hyperphysics.phy-astr.gsu.edu.../leadacid.html Higher voltage than a fully charge battery can supply, when applied to the battery terminals drives the chemical reaction and changes it from releasing electrons to storing electrons but does not reverse the current as most dumb engineers claim. Oh? So how come the little arrow marked "I" (current) has changed direction between the third and fourth pictures? Duh! That is an EXTERNAL circuit. Note how there is never an arrow shown inside the battery - only chemical reactions shown because there is no internal circuit. CN |
Capt. Neal® wrote:
"Me" wrote in message ... In article , Capt. Neal® wrote: Are you trying to claim that a battery in certain state of discharge cannot be charged by a battery that is fully charged if the batteries are connected in a circuit? CN If they are "Series Connected", that is exactly what I am saying, and claiming, and all your Dufus Theories, will not change the Physical Laws involved. Me who wonders if you are going to answer "Bruce in alaska"'s question...... I think I just answered that one of will soon if I missed it. Do something for me. Take a flashlight that uses two AA batteries in series and put a discharged ni-cad AA cell and a fully charged ni-cad into it. Turn on the switch and let it run for about ten minutes. Remove the batteries and check them with a volt meter. You will find the dead cell is no longer dead. Some of the electrons flowing through it in the circuit driven by the good battery will have driven the chemical reaction in the direction that stores electrons. The very same thing will happen with two 12v batteries in series in a circuit. CN But electrons don't flow through a battery! Your words. krj |
"Meindert Sprang" wrote in message ... "Capt. Neal®" wrote in message ... So even an engineer might understand. . . http://hyperphysics.phy-astr.gsu.edu.../leadacid.html Engineers look at a battery as a physical object while an electrician looks at it as a container for a chemical reactions that store and release electricity. Higher voltage than a fully charge battery can supply, when applied to the battery terminals drives the chemical reaction and changes it from releasing electrons to storing electrons but does not reverse the current as most dumb engineers claim. Read the above link carefully and click on all the links and perhaps you will understand the error of your thinking. Well, I did. Lucky for me, I studied chemisty as well. And what do I see in the second picture? The decomposition of lead and sulphuric acid on the left produces, whait a minute... electrons!! And wait, what do I see? On the right side, these electrons are used to combine lead oxide and sulphuric acid into leadsulphate and water. Sooooo, I see electrons flowing THROUGH the innards of the battery. Care to argue with that? Easy to argue with that. Electrons only "flow" in a conductor. A chemical reaction is NOT a conductor. Electrons don't flow in a chemical reaction. A chemical reaction is a chemical reaction. These particular chemical reactions just happen to change the metal composition in such a way as to change back and forth metals that store or release electrons up the plates and out the top and not along a circuit through the electrolyte. There is no "flow" in the traditional sense of the word between the positive and negative plates. No circuit. Where there is no circuit there is no flow. CN |
"Bruce in Alaska" wrote in message ... In article , Capt. Neal® the biggest dfufus walking wrote: Higher voltage than a fully charge battery can supply, when applied to the battery terminals drives the chemical reaction and changes it from releasing electrons to storing electrons but does not reverse the current as most dumb engineers claim. I suppose that you think that a charged battery has more electrons in it than a discharged battery? Right? Is this what your saying above? Please explain, so that we all can undestand what you exact preception of this point is. Negative sarge! A charged battery has used electrons provided for it in the charging process to change the chemical composition of the plates so these same plates can again change their composition through chemical reactions during the discharge cycle to provide electrons. Electrons aren't rally stored as they are in a capacitor. Potential to release electrons is stored by chemical reactions that change the plate metal composition. CN |
"Ronald Raygun" wrote in message . uk... Capt. Neal® wrote: Again, electrons don't move THROUGH the battery. Correct. Electrons DON'T move through the battery, but charge does. They only reside on physically separated plates via chemical reaction (not a circuit). Incorrect. That's what happens in a capacitor, but not in a battery. In a capacitor, electrons are stored on one plate and "holes" on the other, and no electrons move THROUGH the capacitor. Nevertheless charge APPEARS to move through it because it goes in via one wire and out via the other, but really the charge is only stored on the plates and does not travel across the gap. When you DIScharge a capacitor, the charge comes back out again, but still no charge travels directly from one plate to the other within the unit. A battery is different. It also stores charge, but not by accumulating more and more electrons on one plate and holes on the other, but rather by arranging for chemical changes to occur not only on both plates, but also in the electrolyte. True. As shown in hyperphysics.phy-astr.gsu.edu/hbase/electric/leadacid.html which you pointed us to, a charged battery starts off with the electrolyte of sulphuric acid, i.e. a soup of negative sulphate ions and positive hydrogen ions, and with PbO2 on one plate and Pb on the other. When the plates are connected via an external circuit, the sulphate ions are absorbed equally on each plate, in a reaction which at the Pb end generates PbSO4 and liberates electrons and H+ ions, and at the PbO2 end also generates PbSO4 and absorbs electrons and H+ ions. To sustain this reaction, the electrons travel from one plate to the other on the outside of the battery, via the circuit wire, while the H+ ions travel from one plate to the other internally, through the electrolyte. Therefore charge does travel through the battery. We have a complete circuit, with external flow of electrons and internal flow of H+ ions. There's where I disagree. Charge does not 'travel through' the inside of a battery. There is no conductor only chemical reactions that change the composition of the plates. Depending on whether the battery is being charged or discharged these reactions run one way or the other. Note, I said the reactions run one way or the other. I did not say the electricity flows one way or the other. There is a difference which all you naysayers fail to comprehend. Chemical reactions change the plate composition. Plate composition is responsible for the current that is noted in the circuit *outside* the battery. There is no corresponding circuit inside the battery. If there was the battery would immediately short out internally. During charging, the same thing happens, electrons are "pumped" back into one plate and sucked out of the other, which causes the hydrogen ions to travel through the electrolyte in the opposite direction to that in which they travelled while the battery was being discharged. Nothing in the way of current travels back and forth in the electrolyte. The electrolyte is there only as a medium for chemical reaction not as a highway or path for electrons to travel. CN |
Capt. Neal® wrote: Do something for me. Take a flashlight that uses two AA batteries in series and put a discharged ni-cad AA cell and a fully charged ni-cad into it. Turn on the switch and let it run for about ten minutes. Remove the batteries and check them with a volt meter. You will find the dead cell is no longer dead. Some of the *******eletrons flowing through it******** in the circuit driven by the good battery will have driven From the mouths of babes...or, in this case, cretins. Thus does the good Cap'n put paid to his own ludicrous 'theory'. Methinks the boy may have seen the light :-) Oops, sorry, had an attack of blind screamin' optimism there for a moment. Keith |
"Me" wrote in message ... In article , Capt. Neal® wrote: I'm not trolling here. I'm attempting to educate some folks who need it. CN Ever heard of "blind leading the blind", Dufus? You couldn't educate your way out of "Wet Paper Bag"..... Maybe so but with such dense students is it any wonder? Stephen Hawking couldn't make any headway with this sorry lot. CN |
Capt. Neal® wrote:
Care to argue with that? Easy to argue with that. Electrons only "flow" in a conductor. A chemical reaction is NOT a conductor. Electrons don't flow in a chemical reaction. Duh, do a Google search on "Redox" reactions. Electron flow is exactly what's happening. A chemical reaction is a chemical reaction. These particular chemical reactions just happen to change the metal composition in such a way as to change back and forth metals that store or release electrons up the plates and out the top and not along a circuit through the electrolyte. There is no "flow" in the traditional sense of the word between the positive and negative plates. No circuit. Where there is no circuit there is no flow. Dude, you've been draggin' your appendage in the dirt so long on this one, you could see the lines from Soyuz. Give it up. Cretin. Hope this helps, Keith |
"krj" wrote in message ... Capt. Neal® wrote: "Me" wrote in message ... In article , Capt. Neal® wrote: Are you trying to claim that a battery in certain state of discharge cannot be charged by a battery that is fully charged if the batteries are connected in a circuit? CN If they are "Series Connected", that is exactly what I am saying, and claiming, and all your Dufus Theories, will not change the Physical Laws involved. Me who wonders if you are going to answer "Bruce in alaska"'s question...... I think I just answered that one of will soon if I missed it. Do something for me. Take a flashlight that uses two AA batteries in series and put a discharged ni-cad AA cell and a fully charged ni-cad into it. Turn on the switch and let it run for about ten minutes. Remove the batteries and check them with a volt meter. You will find the dead cell is no longer dead. Some of the electrons flowing through it in the circuit driven by the good battery will have driven the chemical reaction in the direction that stores electrons. The very same thing will happen with two 12v batteries in series in a circuit. CN But electrons don't flow through a battery! Your words. Thanks for pointing out that inconsistency. My bad. Semantics again, but you are correct. I should have said some of the electrons flowing through the circuit (external) will drive the chemical reaction in the discharged battery so it's state of charge will be increased. Even though the positive and negative poles are on opposite ends of an AA cell, electricity does not really flow through from end to end as there is no internal circuit as such - just chemical reactions as in a lead/acid battery. But let's not miss the point by pointing out semantics discrepancies. The fact is the discharged cell will take on some charge from the circuit. The same goes for two 12v lead/acid batteries in a circuit. CN |
"krj" wrote in message ... Capt. Neal® wrote: "Gary Schafer" wrote in message ... On Mon, 18 Apr 2005 19:33:47 -0400, Capt. Neal® wrote: "Steve Firth" wrote in message .. . Capt. Neal® wrote: Never, at any time, does electricity flow THROUGH the internals of a battery Utter ********. Utter truth. A lead/acid yacht battery stores electrical potential in the plates via chemical reaction. If there was a circuit within the battery it would not take or store a charge. CN Maybe you would like to explain to us how current gets from one cell in a battery to the next so that each cell gets charged when a charger is hooked to the battery. Duh! The plates are hardwired together and connected to either the positive or negative poles, but not to each other, as would be the case in the minds of those claiming an internal circuit. I am also still waiting for you to explain how one discharged cell in a battery gets charged from the other cells in the battery by only putting a load on the battery. As I am sure you know that discharged cell will be trying to get charged with it's positive terminal hooked to the negative terminal of the cell that is supposed to be doing the charging. Duh, since the positive plates and the negative plates in each cell are hard wired together with all the other positive and negative plates but not hardwired negative to positive and vice versa, to make a circuit as some claim, and if one cell is discharged to say 1.5 volts while connected to cells charged to 2.2 volts in a circuit with some sort of load between the positive and negative battery terminals the discharged cell takes on a charge just as if a battery charger were connected. The discharged cell doesn't know anything other than the higher voltage is reversing it's chemical reaction from a discharging reaction to a charging reaction. If the battery was a conductor internally, tell me why as you charge a discharged battery the amperage it takes gets less and less until it tapers down to almost nothing. If the cells were connected by a circuit inside the amperage would be constant. CN If "since the positive plates and the negative plates in each cell are hard wired together with all the other positive and negative plates but not hardwired negative to positive and vice versa" how does a battery ever acheive 12 volts. That would put all the cells in parallel and since a lead acid wet cell is 2.2 volts, on average, the battery would only have 2.2 volts. krj Boy are you dense! The individual CELLs (consisting of a series of plates) are wired in series or they would not add up to 12 volts. But this does not mean the PLATES are wired in series. Plates are either positive or negative and exist independently of each other. Only chemical reactions interact with them. Wires do not. CN |
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