What is the power of the mobile phone charger?

In addition to the various fast charging technologies of various manufacturers in the market, the power of ordinary mobile phone chargers is generally:

1, input: 100-240v~50/60Hz, that is, the voltage is within 100V-240V (and 50-60HZ), and the current must reach 65mA. If the voltage is too high, the charger is easy to be damaged, and if the voltage is too low, it can't meet the output requirements.

2. output: 5V ~ 1000mA. The output values of 5V and 1000mA mean that the matching appliances must be 5V and the current should not exceed 1000mA.

3. After the battery is fully charged, the standby (uncharged) power of the charger is within 0.3W.

4. At present, the power of many mobile phone chargers is 10W or 18W.

Extended data:

Precautions for mobile phone charging:

1. Avoid long-term charging. First, batteries and chargers are prone to aging. Second, the battery may overheat, causing some unnecessary accidents.

2. Chargers should not be mixed. When traveling, many people will choose chargers casually for convenience, and even use those chargers that are too tight or too loose because of the lack of power in their mobile phones, which has great security risks.

3, do not use inferior batteries or chargers, it is best to choose original products. Under normal circumstances, if the battery or charger is aging, it will be more expensive to buy the original one than some other brands, but the safety factor is much higher.

In order to match the charger correctly, we need to know the relationship between voltage and current. Formula: power = voltage x current. It means that under the same voltage, the greater the current, the greater the power, which means that under the same voltage, the greater the current, the shorter the charging time. That is, the same output voltage is 5V and the output current is 2.0A, which is half the time of1.0A..

But not high voltage, high current. First of all, the higher the voltage, the greater the hair loss, especially when the output voltage of the charger exceeds the input voltage of the mobile phone battery, which will lead to a large amount of heat in the battery and affect the normal use. Similarly, if the battery is too large and exceeds the input current of the battery, it will also affect the normal use of the battery.

Baidu encyclopedia-mobile phone charger