Power consumption 5V
1, the USB socket is actually a 5V power supply, the components of which have a service life. Long-term live work, safety life is not more than 5 years.
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2, any power supply without load will consume power, this USB charging socket has no switch, will always consume power.
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3, the charger output current is usually designed for a specific tablet computer to meet its different current needs, and some voltages are not necessarily 5V. With USB socket power supply, the current and voltage may not match