Mobile phone charging voltage is 4.2V, current is 2A is fast charging. Mobile phone fast charging method:
1. Power off or turn on airplane mode. Turning off your phone or turning on airplane mode is the fastest way to charge it in an emergency.
2, avoid charging the temperature is too high or too low. The charging temperature of the mobile phone should be about the same as room temperature, not too high or too low, and the charging efficiency of the mobile phone will be greatly improved.
3, do not plug in the computer USB port charging. The necessary current to charge through the computer is lower than the current through the power adapter, so using an AC power adapter to charge through the socket is the fastest way to charge.
The maximum current is about 200 to 240 amps, and the voltage is about 300 to 400 volts, of course, there are some that reach about 500 to 700 volts of power to as high as 50 to 100 kilowatts, in the fast charge above, and the slow charge interface is different, so it is not able to charge at home 220 volts of electricity.
To charge the battery, the conventional charging voltage is about 1.2-1.3 times the standard voltage of the battery, and the current is 1\/8-1\/10 of the battery capacity.
Fast charging often increases the charging voltage to more than double the standard voltage of the battery, and the charging current will reach 1\/2-2\/3 of the battery capacity.
The voltage and current of fast charge depend on different types of fast charge technology. Here are several common fast charge technologies and their voltages and currents:
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1. Qualcomm Quick Charge: Fast charging voltage up to 5V, 9V or 12V, current up to 3A.
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2. MTK Pump Express: Fast charging voltage up to 5V, 7V or 9V, current up to 2A.
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3. Huawei SuperCharge: Fast charging voltage up to 4.5V, 5V, 9V, 12V or 20V, current up to 5A.
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4. OPPO VOOC Flash Charge: Fast charging voltage is 5V, current is up to 4A.
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5. Samsung Adaptive Fast Charging: Fast charging voltage up to 5V or 9V, current up to 2A.