Is the charging speed related to the length of the data cable?

2019-08-07 10:21

Theoretically speaking, the shorter the length of the data line, the smaller the loss of the wire, the longer the data line, the greater its resistance, the same charging speed will be relatively slower, on the contrary, the shorter the data line, its The smaller the resistance, the faster the charging speed. So today, I will test the strength of the data cables of different lengths!


Does the length of the data cable have a big impact on the charging of the mobile phone?


Does the length of the data cable have a big impact on the charging of the mobile phone?


The test results are as follows:


(1) .1 m original data cable: fully charged time --- 2 hours and 5 minutes


(2). 1.68 m lucky red data cable: fully charged time --- 2 hours and 20 minutes


(3) .2 m zinc alloy data cable: fully charged time --- 2 hours and 26 minutes


In this way, the length of the charging cable does have some effect on charging, but it seems to have little effect. In addition to data cables of different lengths, power strips, power banks, and computer cases, will these devices that are often used for charging affect the charging speed of mobile phones? Next we perform the second test;


(2). The next day, I borrowed another power bank to charge three iPhones with zero power respectively---[DELL computer interface Feat. 1m original data cable]; [Power bank Feat. 1.5m Lucky Red Data Cable]; [2A Patch Panel Feat.2m Zinc Alloy Data Cable]. Changed the test method today. All three 6 plus's are empty. Let's see how much power they get in 60 minutes?


Does the length of the data cable have a big impact on the charging of the mobile phone?


Does the length of the data cable have a big impact on the charging of the mobile phone?


Does the length of the data cable have a big impact on the charging of the mobile phone?


The current of the power strip is generally 2 amps, the current of the power bank is generally 1 amp, and the current of the computer USB socket is low, only 500 mA. The test results are as follows:


The test results are as follows:


(1) .1 m original data cable feat. Computer interface: charge to 40%


(2). 1.68 m lucky red data cable feat. Power bank: charge to 45%


(3) .2 m zinc alloy data cable feat. 2A power strip: charge to 52%


It can be seen that, when charging, using a charging source of 1 amp or 2 amps still has a little effect on the mobile phone, but the difference in speed is not large. On some high-end smartphones, because there is a charging current-limiting chip on the motherboard, this chip will limit the output current, so instead of outputting 2A of current, the phone will receive 2A of current. current. Now that I say this, do you understand?