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Does the USB charge line have the size of the current?

Date:2018-05-28 Hits:131
The USB charger is generally 5V, the output current is 0.5A, 1A, 2A and so on, but for the USB charging line, there is no distinction between the size of the current and only the size of the internal resistance. Poor USB charging line has great internal resistance, which will affect charging current.