Most people now use smart phones. Although the functions have been greatly improved, the standby effect is not ideal. Watching a video, playing games, the phone will soon be out of power. One day, many people have to charge two or three calls to their mobile phones. In order to facilitate charging, you have to prepare several charging cables. So will these different charging lines affect the charging effect of the phone?
For the convenience of the map, many people now buy more data cables to charge the phone at any time. However, the data lines bought are very different, especially the length is very different. The reporter's investigation found that everyone has their own opinions on the effect of using mobile phones with different lengths of data lines.
Xi'an citizen Mr. Ma: I don't just use the official standard, but also use the other, the charging effect is the same, the time is the same.
Mr. Liu, a citizen of Xi'an: I feel that the long-term charge is fast, and the long-term line that I have been using seems to be quite fast.
Ms. Zhang, a citizen of Xi'an: I don’t think it has any effect. The only thing that affects the charging speed is that you don’t play with your phone when you charge.
Does the length of the mobile phone data cable have any effect on the speed of charging? In order to find the answer, the reporter came to a mobile phone mall, and asked professional mobile phone engineers to do experiments to answer doubts. We found the same model of IOS system phone and Android system phone. Because the number of times the phone is charged will affect the charging effect, the mobile phones used in this experiment are all new phones. In addition, the power consumption options such as brightness and wireless networking of these phones are also adjusted to consistent parameters. We first tested the charging speed of different lengths of data lines connected to the Android phone. We prepared two data lines with different lengths, one 32 cm long and one 100 cm long. The mobile phone engineer will charge both of them 24%. The two mobile phones are plugged into the two data lines, and the original plug of the mobile phone is inserted into the power strip of 2 amps to charge the two mobile phones for 20 minutes at the same time. After 20 minutes, the Android phone charged with a 32-cm data cable was charged 42%, and the Android phone charged with a 100-cm data cable was charged at 40%.
In order to subdivide the effect of the length of the data line on the charging speed, in the experiment of testing the iOS system mobile phone, we added a data line, the length of the three data lines are 22 cm, 100 cm, 150 cm. We plugged three data cables into three iOS phone phones with 70% power, charging for 30 minutes on a 2 A plug-in board, and after 30 minutes, charging the iOS system with a 22-cm long data cable. The power of the mobile phone reaches 85%, the iOS mobile phone charged with 100 cm data cable is charged to 82%, and the iOS mobile phone charged with 150 cm data cable is 80%. The results of the two experiments show that the shorter the data line and the faster the charging speed, whether it is an Android phone or an iOS phone, why?
Shao Yaping, a mobile phone engineer in a mobile phone mall: Theoretically speaking, 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 the resistance, and the slower the charging speed. On the contrary, The shorter the data line, the smaller its resistance and the faster the charging.
What other factors will affect the charging speed of mobile phones?
It seems that the length of the data line really affects the speed of charging the phone, but you don't have to rush to buy a short data line, because the difference is not too big. Some people may ask, when charging mobile phones, in addition to different lengths of data lines, patch panels, charging treasures, computer chassis, are these devices that we use to charge will affect the charging speed of mobile phones?
Charging the phone in different environments, the charging device is also different. At home, we usually plug the phone into the socket and charge it. In the office, the office worker is used to connect the phone to the computer to charge. When going out, the phone can only rely on the charging treasure. So, in the eyes of everyone, which of the three charging methods is the fastest?
Ms. Yuan, a citizen of Xi'an: I think it should be faster on the board and feel more reliable.
Xi'an citizen Mr. Ma: Charging treasure and plug are faster, the computer is slower, and may have a relationship with current.
Mr. Liu, a citizen of Xi'an: I think the computer (fast), the computer is charging fast, because I often use it in the office, I often use this line, plug it into the USB port of the computer, and the speed can be faster.
Everyone said it sounds reasonable, but we still have to speak through experiments. This experiment will test the iOS mobile phone with the same power. The three experiments connect the original data cable with the iOS mobile phone. One mobile phone is connected to a laptop to charge, and one mobile phone is connected to the charging battery with a current of 1 amp. Charging, there is also a mobile phone connected to the power adapter plugged into the power strip to charge. Which of the three mobile phones is the first to charge 100%? After 40 minutes, the experiment has the result. The power of the mobile phone plugged in the power strip is charged to 100% first, and the power of the mobile phone charged with 1A is 96%. The computer USB port is used to charge the mobile phone. The phone has the lowest battery capacity of 92%. The mobile phone engineer told reporters that the reason why the charging speed of the mobile phone is different with different devices is because the current of these devices is different, the current of the power strip is generally 2 amps, the current of the charging treasure is generally 1 amp, the current of the computer USB socket The lowest is only 500 mAh. Then, using a device with different currents to charge the mobile phone, especially the device with high current, will it affect the mobile phone?
Shao Yaping, a mobile phone engineer in a mobile phone mall: When we are charging, we actually use a charging head of 1 or 2 amps. Actually, there is not much impact on the mobile phone, but there is a difference in speed, but this situation is at some high-end. On the smart phone, because it has a charging current limiting chip on the motherboard, this chip will limit the output current, so it is not the output of 2 amps of current, the phone will receive 2 amps of current.
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