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Which USB Data Cable is Best for Charging?

26 views Yuda Electronic (HK) Technology Co.,Limited. 2018-10-10

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How much does the length of the  USB data cable affect the charging speed? Many people have such questions, and the answers given online are different. Some say that the shorter the USB  data cable, the faster the charging, and some people say that the charging time has nothing to do with the length of the USB  data cable. It is related to the quality of the charger and the battery of the mobile phone. Is the length of the USB data cable related to the charging speed?

We have prepared 3 USB data cable of the same brand and same model but different lengths, 25 cm, 1 m, and the 2 m. We also prepared three identical charging heads and three identical Phone. The three phones are consumed from full power to 20%, and then charging begins.

 

Which USB Data Cable is Best for Charging

After 96 minutes, the 25 cm USB data cable is full of mobile phones; after 104 minutes, the 1 meter USB data cable is full; after 111 minutes, the 2 meter USB data cable is full.

 

It can be seen that the length of the USB data cable does affect the charging speed. This is because the USB data cable has a resistance, and a voltage drop occurs when charging. If the resistance is too large, a large amount of power is lost on the USB  data cable, which affects the charging speed. Longer USB data cable have a higher resistance and charge more slowly!

 

However, according to our experiments, it is not difficult to find that the common USB data cable length and charging speed are only seven or eight minutes; and now most mobile phones have a fast charging function, the difference will be even smaller. Therefore, when the actual selection, how long to buy the USB data cable is still based on their own habits and convenience, charging time is not a major consideration.

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