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How Much Power Is the General Car Charger?

The output voltage of cars is 12V and that of trucks is 24V. Most general-purpose on-board chargers (12V) are suitable for cars. If they are other models, they need to choose the corresponding voltage standard. Many car chargers can meet the 12v-24v standard, which is applicable to all models.


When purchasing car charger, pay attention to the voltage and current of supporting equipment. For example, iPhone is 5V / 1a, tablet computer and mobile power supply are mostly 5V / 2A. If the dual USB interface car charger charges the mobile phone and tablet computer at the same time, the total current of the car charger should be at least 3A or more. Otherwise, the charging speed will not only drop sharply, but also overheat and even damage the equipment.


The power consumption of the fast charging car when charging the mobile phone is less than that of the ordinary car.
A battery manufacturer in Guangdong has a public document, "how to calculate the battery capacity according to the charger and charging time", which says that the charging time is the battery capacity divided by the charging current and multiplied by a factor of 1.2.


According to this formula, the battery capacity of No. 1 mobile phone is 2700 MAH, and the current charged by an ordinary car is 1.36a, that is, 1360 ma.


Then the battery capacity is 2700 MAH divided by 1360 MAH, multiplied by 1.2, 2.38 hours, which means that the ordinary car fills the No. 1 mobile phone for 2 and a half hours.


How Much Power Is the General Car Charger?

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The output voltage of cars is 12V and that of trucks is 24V. Most general-purpose on-board chargers (12V) are suitable for cars. If they are other models, they need to choose the corresponding voltage...

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