What is the reason for the slow charging of data cable?

Question 1: What causes the fast charging speed of mobile phone charging cable? In our conventional thinking, the thicker the charging cable, the better. In fact, this is a wrong concept for charging. Each data cable has its own standard, and careful engine oil may find that its data cable is printed with a label. Of course, if you don't print it, it's not fake and it's not unqualified. You'll know it only when the manufacturer customizes it. There's no need to remind yourself. The specific standards for data cables are marked as follows:

If you find a string of alphanumeric characters printed on your data line: AWM 2725 80℃ 30VW-128awg/1p+28awg/2c. Its significance: AMW 2725 is wire type, 80 degrees Celsius is the highest working temperature, 30V is the highest voltage, and vW- 1 is the fire protection standard. None of the above matters, but the following one: 28AWG/ 1P+28AWG/2C, which is the abbreviation of American cable specification. American wire gauges have many labels, such as 28, 26, 24, 22, 20 ... The larger the number, the smaller or thinner the diameter of the wire. No.28 American wire gauge is the wire diameter of 28AWG. And 1P is the abbreviation of 1-pair, representing a pair of twisted-pair cores, and 2C is the abbreviation of 2-core, representing two straight-through cores; The whole 28AWG/ 1P+28AWG/2C means that in this USB cable, there are 1 twisted pair of No.28 American wire gauge and two straight lines of No.28 American wire gauge. Because twisted pair has good anti-interference ability, it is usually used as signal data line. The USB cable has two data lines and two power lines, so 1P is generally the data line and 2C is the power line.

Ok, how about this 28AWG/ 1P+28AWG/2C line? I checked the AWG specifications and found that the resistivity of 28AWG is 228 ohms per kilometer. For example, if a conductor with a length of 50 cm is used, its resistance is 228 * 0.5/1000 = 0.114 ohm. The resistivity of low-grade 26AWG, 24AWG, 22AWG and 20AWG is 139, 89, 53 and 37 ohm/km respectively. That is to say, the smaller the AWG number, the smaller the resistivity. For transmission lines, of course, the smaller the line resistance, the better. The common good wire in the market is 24AWG, and its resistivity is 89 ohms per kilometer, which is 60% lower than that of 28AWG. Therefore, when we need to buy a separate data cable for charging, we should buy a cable marked with 24AWG/2C or below.

For the charging head, we can use the charging head with an output of 5V,1a. However, it is worth noting that even if the nominal output of the Pinsheng charging head I bought separately is 5V, 1A, the actual output is different.

The charging speed is limited by the mobile phone itself, the output current of the charging head and the material of the charging cable. When charging, try to use the original charger of the mobile phone, or use a slightly larger current and use a small resistance wire. Reducing the current is a loss. However, the charging time will not be significantly shortened because the battery will be damaged by excessive current. Mobile phones have built-in components to limit current, just like a sluice on a river limits water flow. Battery detector and battery monitoring Widget Pro can be used to detect the current, which is very good, and you can see the real-time current and voltage data of the battery. .

This is what I hope to adopt.

Question 2: Is the slow charging of mobile phone due to data cable or plug? The reason why the toll head is relatively large.

Question 3: What happened to the slow charging of the data cable?

According to your description, I suggest you try the following operations: 1. Turn off and charge the test. 2. Replace the charging position to eliminate the slow charging caused by intermittent contact of the socket. 3. If conditions permit, replace the standby charger for testing. Or send it to maintenance inspection. 4. When charging, if the mobile phone is equipped with a third-party plug-in such as a charging doctor, it is recommended to test it after unloading. 5. Check whether there are foreign objects in the charging interface of the mobile phone, such as liquid inlet and sundries, which leads to poor contact between the charging interface and the charger and slow charging. If this is the case, it is recommended to send it for repair as soon as possible. 6. Back up mobile phone data (phone book, SMS, pictures, etc.). ) and restore the phone factory settings. If the problem still exists, it is recommended that you send your mobile phone and charger to the local Samsung service center for detailed inspection with the three-guarantee certificate. Please visit the address of the local service center: Samsung/ ...

Welcome to Samsung Digital Service Platform: support.samsung/ask.

Question 4: Why is the data cable charging fast and slow? The power is different, so the charging speed is different. ..

You said that an ordinary motorcycle can run to 120 soon, right?

Where is the car?

200 is fine.

So this is normal.

If you move the data cable of the hard disk ..

I think .. Maybe he lied to you,-

Be careful!

Question 5: The mobile phone charges slowly. What is the reason? Is it related to the data line? Related to the data cable and charger. I just use the original millet charger to charge quickly, but it is very slow to buy a one-dollar data cable in a one-dollar store.

Question 6: The smartphone suddenly charges slowly. What is the reason? Is there something wrong with the data cable? It may be a data cable, a charging interface or a system. You can go to the after-sales service center for specific reasons.

Question 7: The data cable charges slowly. How did you solve it? 1. When charging, the charger will generate heat, but the temperature is too high, indicating that the quality of the charger is poor. If it is hot, it will attract attention!

2. It is best not to play with your mobile phone when charging. When the mobile phone is working while charging, it needs more input current, which will cause more serious fever.

1, you may be using the wrong power outlet, and the output current amperage is not large enough. ...

2. There is something wrong with the socket on the wall, which is dirty and has poor contact. ..

3. Or use the wrong USB cable interface to charge.

4. The resistance characteristics of wire quality and length will also affect the charging speed. The experimental results show that the shorter the data cable, the faster the charging speed, whether it is an Android phone or an iOS phone. Why? Theoretically, the shorter the length of the data line, the smaller the loss of the wire. The longer the data line, the greater its resistance and the slower the charging speed. Conversely, the shorter the data line, the smaller the resistance and the faster the charging speed. Usually, 1 amp or 2 amp charging head is used for charging, which has little influence on the mobile phone, but there is a little difference in speed. However, in some high-end smart phones, because there is a charging current-limiting chip on the motherboard, this chip will limit the output current, so it does not mean that the mobile phone receives 2 amps when it outputs 2 amps.

It is most important to change a reliable charging cable. I use the charging cable of Nuoyin Nuoyin, which is efficient and stable, and the charging speed is increased by 35%. I've been using it. You can try. Thank you, hope to adopt! ! !

Question 8: Is the charging speed of mobile phone related to the data cable? The main difference is that after the mobile phone is connected to the mobile phone, it will judge whether to use the transmission mode (plug in the computer) or the charging mode (plug in the electricity). The transmission mode will be slower because you need to read data while charging. Simply put, if the power supply is plugged in, the charging speed will be faster, which is why the transmission line affects the charging speed. If your transmission line only needs charging, you can find a transmission line with a jumper to charge it, talk to your boss, or look online. Only an expert knows that the jumper is to short-circuit two contacts in order to transmit data. He will trick the mobile phone into using the fastest charging mode forever, but he can't transmit data (because of short circuit), because he wants to specially design a jumper to trick the mobile phone into charging in the fastest mode, so the original factory will definitely not sell it. Find an expert shop or a seller to buy it.

Question 9: Why do some mobile phone data lines charge fast and some charge slowly? There are also data cables that can't be charged at all, but they are connected. The quality of the thread is good or bad. But the root cause is still the charging head. The output current of the charging head is fast when it is large and slow when it is small. If the charging time of different wires of the same charging head is different, it is best to change a wire. After all, it makes sense that raw silk is expensive.