Car charge 2.4A and 1.0A, refers to the maximum charging current provided by the car charge.
If you multiply by the output voltage of 5V, it is the rated power of this car.
However, it does not mean that when charging a mobile phone or IPAD, it is 2.4A and 1.0A, because it is related to the charging circuit of the phone.
Generally, Apple mobile phones can allow 1A to 1.3A charging current charging, IPAD may be more than 1.6A, so it is best to buy the output capacity of more than 2.4A, such as 3.1A, 3.4A, and even 4.8A car charger, so as to ensure that the two devices can be charged faster at the same time.
In addition, generally on the two ports of the car charger, the words 2.1A and 1A are also marked respectively, which refers to the maximum output current of this output outlet. The total output of this car charger is 2.1A.
Select the appropriate outlet according to the device being charged.
Not all car chargers with enough power can charge Apple and Android devices according to the charging current that the original charger can provide, for example, Apple and Samsung in order to protect their original chargers, specially set up the charger recognition circuit for the charging current. Resulting in the use of non-original charger, charging speed is slower, not depending on whether you are 3.1A or 2.1A.
The road is a foot high, the devil is a foot high, some professional manufacturers, the use of intelligent identification of the chip, can identify the charging mobile phone, and then provide the best charging current.
Do not look at a small car charger, pay attention to or a lot of, try to buy brands and moderate price products, do not be cheap.
In general, the car charger that can provide a larger charging current will be better in terms of charging speed, heat, life, and circuit protection.
The difference is the problem of charging speed, 2.0A output current and 1.6A output current than the charging speed will be about a quarter faster. However, relatively speaking, the heat will also increase, and the output current of about 1.2A is generally better for mobile phone charging.