Lithium battery charging process.lithium trolling motor battery

　　Charging is to reverse the discharge process above

　　Taking lead acid batteries as an example:

　　Lead acid batteries were the first practical batteries manufactured. The principle is as follows:

　　Insert two lead plates A and B into a sulfuric acid solution, and the result of the action of lead with sulfuric acid is the formation of lead sulfate on the two lead plates A and B, which is also saturated with lead sulfate in the solution. This is when there is no potential to charge the battery, the chemical reactions that occur at the two poles are as follows:

　　A; PbSO4+2H2O -2e - → PbO2+H2SO4+2H+;

　　B: PbSO4+2e - → Pb+SO42-;

　　It can be seen that after charging, PbO2 on board A becomes the positive electrode, and Pb on board B becomes the negative electrode. During discharge, the reactions between the two poles are as follows:

　　Positive electrode: PbO2+H2SO4+2H+-2e - → PbSO4+2H2O-2e -;

　　Negative electrode: Pb+SO42- → PbSO4+2e -;

　　The reaction occurring during discharge is exactly the reverse process of charging. When charging, the maximum electromotive force is 2.2V. During discharge, the electromotive force gradually decreases and must be charged when it reaches 1.8V, otherwise it will damage the electrode plate

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