The polarization effect of a charger refers to the diffusion of substances on the battery electrode plate and the reaction with the electrode to produce chemical changes when the current flowing through the power supply in the charger flows to the battery. These chemical changes will lead to a continuous decrease in the concentration of lead phosphate inside the battery, thereby reducing the capacity and voltage of the battery.
Especially when the battery is fully charged and still using a charger, this polarization effect will be more pronounced. This is because the battery cannot withstand more current when fully charged, so the current needs to be limited, which will reduce the output voltage of the charger and cause the battery charging speed to slow down.
To reduce the impact of charger polarization effects, methods such as battery protectors, microcontrollers, and fast charging technology can be used. These methods can control the output current and voltage of the charger, thereby effectively reducing the impact of polarization effect on battery performance.
