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Advantages And Disadvantages Of Portable External Battery Charge Management

By Expert Author: maria liang

First, high efficiency

power bank controls current by electronic switch, that is theoretically lossless, low temperature, but charging fastly,because low temperature is easy to reach the fast charging purpose.

Second, long battery life

To prevent causing polarization affecting life of the battery during the charging process, it use pulse-type charging with rest repair process, getting better throughout the charging process of the battery power absorption.


First, this line achieves purpose of voltage reduction and charging through the linear stable voltage constant current for the excess energy consumption. The temperature is very high and the charging current can not be large. That is because the larger the charging current is, the greater the energy consumption will be and the larger the heat radiating area will increase.

Second, the solar power bank of this line is easy to polarize. The larger the charge current is, the greater the polarization area will become, and the lower the capacity will be. After a long time, the battery will lack of capacity. The best way to reduce polarization is to charge after using up the battery power. Reducing the times of battery charging is to longer the battery life (polarization refers to that the oxides accumulation hampers electrons migration). Linear portable external battery charger normally has three processes: constant current, constant voltage, and trickle charging.

2. Pulse portable external battery charger: it uses CMOS electronic switch, reducing voltage and charging by constant current through controlling the switch, also called PWM control charger. During the control process, gets data from CPU port detection for calculation, feedback and adjustment of PWM width and frequency to complete the charging process. Its disadvantage is that this line technique is very complex. Pulse portable power bank typically has four processes: trickle charge constant current, express charge constant current, trickle charge with repairing

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