In theory, the length and material of the charging cable will affect the charging speed, but the actual experience affects the charging speed mainly by the material of the charging cable and the size of the cross-sectional area of the charging cable (the thickness of the wire). The length of the charging cable theoretically does affect the charging speed. Theoretically, the shorter the length of the data line, the smaller the loss of the wire, the longer the length of the data line, the greater its resistance, the same charging speed will be slower, on the contrary, the shorter the data line, the smaller its resistance, the faster the charging speed will be. However, in practice, the length of the data line has a small impact on the charging speed, which is too small to be ignored. The material and thickness of the charging cable are the main hardware factors that affect the charging speed, the thicker the cable, the faster the charging speed, the better the material, the faster the charging speed.
For example, the regular charging wire with faster charging speed is generally pure copper, and the wire is relatively thick, while the cheap charging wire on the Internet is an alloy wire with other impurities, and the wire is relatively thin. Of course, there are many factors that affect the charging speed of mobile phones, in addition to the material and length of the line, as well as the charging head and whether the mobile phone system and fast charging scheme are adapted. It is also best to use the original charger to charge, which is the guarantee of charging speed and safety.
No, the length of the charging line does affect the battery output power, because the output power is stable, once the normal limit, the power will become different, so choose the power
No effect, because the charging voltage is unchanged, the length of the mobile phone data cable will not affect the charging and transmission efficiency, because the transmission and charging is the speed of current, is the effect of the speed of light, so the transmission speed is very fast, will not be affected by the electromagnetic field