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Mobile phone charger can be universal, the current mobile phone charger is composed of charging head and data line, data line as long as the interface is the same can be universal, and the charging head output voltage and current are different, most of the mobile phone charging voltage and current are 5V, 1A, while some mobile phones support fast charging function, the output current can reach 2A. The voltage is also appropriately increased, using such a charging head, the charging speed will be accelerated, but for mobile phones that do not support fast charging, it will have a certain impact on battery life.