Originally posted by wantomake
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When you let a battery just sit, those charges make their way back to the other side and the two sides “equalize”, so our meter registers 0 volts eventually.
when you put a load on the battery you give those charges a path of least resistance to follow but with the SAME result. You measure less in the battery because the two sides have equalized. The “load” didn’t “use up” the energy, it ran because the energy moved through it. Yes, there are losses in the load so you end with less than you started with.
To charge a battery we use a tremendous amount of energy to force those charges back to one side. Consider this possibility when you look at what you saw happen.
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