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Is the charging speed of mobile phones determined by USB Charger or USB Cable?

2021-05-21

Is the charging speed of mobile phones determined by USB Charger or USB Cable?

 

Presumably my friends are inseparable from fast charging today. 18W fast charging is basic. The flagship phones of major brands even come standard with 40W or higher fast charging. So does the charging speed of mobile phones depend on USB Charger or USB Cable?

 

In fact, the charging speed is directly related to USB Charger and USB Cable.

 

1.What is the relationship between charging speed and USB Charger?
 

When charging the mobile phone, the USB Charger determines the voltage and current, the maximum output power, and at the same time determines the maximum charging power that can be provided to the mobile phone. The original or large-brand USB Charger will be marked with voltage and current output parameters.For example, if your mobile phone supports 4.5V/5A, that is 22.5W charging, and the USB Charger you use is a 5V/1A charging head, charging the mobile phone can only output 5W at most, so the charging speed is naturally much slower .

 

 

 

2. How does USB Cable affect the charging speed?

 

The USB Cable connects the mobile phone with the charging head and is mainly responsible for the transmission of current. The quality of the USB Cable and the performance of the wire determine the level of loss in the current transmission process.

The wire of USB Cable is a component that affects the speed of charging. Generally speaking, there are 4 wires, and more than USB3.0. The thicker the wire, the greater the amount of current it can carry, and the faster it will charge.

 In addition, the length of the USB Cable also affects the charging speed. Generally, the standard data cable of a mobile phone is 1 meter, but we may choose a longer USB Cable for the convenience of our own use.

But in theory, the shorter the USB Cable, the less the loss of the wire, and the faster the charging speed.