Explain constant voltage system, Physics

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Explain Constant voltage system

Constant voltage system:  In this process voltage is kept constant but results in very huge charging current in the starting when the back emf of the cells is low and a small current when their back emf enhances on being charged. With this method, time of charging is almost decreased to half. It enhances the capacity by approximately 20% but decreases the efficiency by 10% or so. 

 


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