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Capt. Neal® wrote:
I'm talking about two 12v batteries in a series circuit meaning one positive pole connected to the negative pole of the other battery. The left over positive and negative poles must be connected to some sort of circuit and load such as a light bulb or electronic gadget that will cause current to flow through the entire circuit. In such a circuit, neither battery will charge the other, they will only be discharged together through the load. The same current will flow through both batteries, and in both batteries you can regard the current as "flowing out" of the positive pole. To charge a battery, current must be flowing "into" the positive pole, which can only happen if you connect two batteries in parallel, where one is more discharged than the other. Meindert You are wrong. You cannot run current though a battery backwards. You charge with a charging source that has higher voltage than the battery and by wiring it so there exists a complete circuit. Duh, Current NEVER flows through the battery. A battery stores and releases electricity chemically. There is no circuit passing through the battery. The only circuit that exists is external to the battery. View a battery as a gasoline tank gas (electrons) can be added to the tank or removed from the tank. It's a storage device and not a pipe of some sort that has flow one way or the other inside it. that stores or releases electrons. A battery is a tank and only tank. It is not a circuit. CN OK, what do you call this "release of electrons"? Conventional current flow is usually referred to as "current flowing from + to - in a circuit. In reality is the movement of electrons from the - pole to the + pole. If electrons move within the battery, there is by definition, current flow. There is only current flow in a circuit. Where you test for flow at the battery terminal is definitely outside the battery and part of a circuit. A battery is a dead-end storage device that is connected to a circuit externally to power it. Electrons don't move within the battery in a circuit. They power chemical reactions that store or release electrons. Hence the term, storage battery. They go in, they go out, they don't go through. Because there is a circuit between the two batteries which circuit provides higher voltage at the poles of the battery with lower voltage so electrons can flow IN to drive chemical reactions which store said electrons and increase the overall state of charge of the battery. Never do electrons flow through the battery - only in and out. Picture lead/acid batteries as a tank, not a circuit, and you'll begin to understand. They are used to power circuits but they, in themselves, are not a circuit. CN If it is like a tank, why do you have to connect the negative lead from your solar panel? I fill my gas tank with only one hose. Maybe it's so that the electrons from one side of the solar panel can get back to the other. That's called a "complete circuit" which is necessary for current flow (or electron flow). If the electrons don't move through the battery, how do they get from one side of the circuit to the other? krj |
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