The charging voltage is too high to charge the learning machine, and now it can t be charged!!

According to what you said, it should be DC charging, AC is the same, you probably use other chargers to charge your learning machine, the reason for the failure to charge the point, one is full, it seems that it should not be your situation, and there is a charge that is broken, in fact, it is very simple to solve, for example, your 10V2A charger to charge your 5V1A device, as long as you add a resistor that can withstand it, the resistance is both partial voltage and current limiting, but this resistance seems to be very powerful, Because the voltage difference is consumed on the resistance, that is to say, the electrical energy is wasted on the thermal energy of the resistance, but it can be used, it is a waste of a little electricity, the resistance needs to be calculated well, in short, adding a resistance can charge anything, but the resistance power should be large, and the resistance value should be selected. As mentioned above, the middle 5V is added to the resistor, if you want the current to be normal 1A to rush forward, the resistance value is small and the power is large, and the current will be very large, but you can add a particularly large resistance, although the current is very small, but the resistance is not easy to break, but the charge is slow.

As far as I know, power management should be a software system, or a circuit, integrated circuits are generally a very mature and widely used circuit made of a very small module, the two have nothing to do with each other.

You can directly replace an electric board after the sale.

The relay cried and burned, and changed it.

2. Check whether the data cable is normal. The data cable looks normal on the outside, but it may have broken on the inside. The way to check is to borrow someone else's data cable to see if it can be charged.

4. Again, check whether the original charger can work normally. You can connect the charger to another mobile phone with U-S-B port to see if it works normally.

5. If the above two are still not charged after checking, please try to plug in the U-S-B port of the computer to see if the computer can recognize the mobile phone, if it can be identified, see if it is charging, if it is identified but not charged, it is estimated that it needs to be repaired.

There are several common situations when charging is not available:

1.If there is a problem with the data cable, try to change the data cable;

2.If there is a problem with the charger, try to change the charger;

3.Back up your data, flash your phone;

4.Maybe the charging port is not plugged in properly, or there is a problem with the charging port;

5.It is possible that the battery is faulty and cannot be charged.

If you can't contact the manufacturer, generally speaking, one month replacement, one year warranty.

Are you sure you have charged the power bank on the computer, and is the power bank running out now?

If you are sure that it is charged, then is the charging cable you choose when charging your mobile phone the one that is commonly used?

If it's still the same cable and you've ever charged your phone, then it's sure that your power bank is "finished" and charged.

It could be that the circuit is burned, or that the internal wiring is faulty. It is recommended to find a manufacturer to replace it.

Newman's is a half-year replacement, a one-year warranty, you don't know what brand, this can be referred to.

Mobile phone power bank cannot be charged analysis:

1. If the charging head is faulty, use other charging heads to test whether it can be charged.

2. Data cable and interface failure. Replace with a different data cable for testing.

3. The power supply booster module is damaged, (the above two are invalid, it can be judged) that the booster module needs to be replaced for maintenance.

Hello; Don't you know how many fake power banks are now? Some power banks only have a small battery in them, hehe, I've dismantled them! It's not a problem with the power bank, it's a problem with the mobile phone cable and the power power cable!

There is also the issue of the battery. Check these and the phone socket, and the power bank socket. There is a circuit board in the power bank that may be broken, is the power bank not charging for a long time?

This is not good and will shorten the life of the power bank! Mobile phones need batteries, and power banks need batteries! The battery has his lifespan!

Also remember what the power bank voltage is, you can't charge it if you don't have it! It's not good for the phone!

First of all, you need to confirm whether it is a problem with the charging cable, use the original data cable of the mobile phone to connect it to see if it can be charged, and secondly, see if your charging is turned on. Then if you still can't, it may be a problem with your mobile phone or power bank. It's a good solution.,In the end, if it's really not good.,If you buy it online.,Just exchange it.。。

Isn't it compatible?

A lot of mobile phones are incompatible.

I'm using it, c l n good energy, it seems to be pretty good!

How much does the mobile power supply cost, if it is cheap and super large capacity, I can't help it, the battery cells are counterfeit and false standard capacity, and the capacity is almost zero after a few times. I bought the energy treasure box, 7800MA130 free shipping, Samsung's original battery cell, right every penny spent.

If you can't charge it, it's generally the charger, data cable, and battery, so replace the charger and data cable first, if it doesn't work, it's a battery failure or life expectancy.

Hello dear netizens! What model of your machine is it? Are you using the original charger? It is recommended that you describe it in detail so that it can help you answer.

Hello, I hope the following methods help you:

Step 1: The mobile phone can't be charged, of course, you have to find out which piece is wrong, and only when you find the problem can you prescribe the right medicine. First of all, the phone is connected to the charger and plugged into the plug board to see if it can be charged. If it can't be recharged, then the current possible problem is:

1) The charger is broken.

2) The cable is broken.

3) The mobile phone interface is broken.

4) The battery is broken.

5) System issues.

6) Then move down to exclude.

Step 2, change a connection cable or change the charging plug, and then charge, to see if it can be rushed into the electricity, if the power is flushed, then it proves that this is the problem, change the wire, or change the charging plug. Pay attention to the current and voltage of the original charging plug of the mobile phone when changing the charging plug to prevent harm to the mobile phone. If you can't rush, then the possible problem is:

1) Mobile phone interface problems.

2) Battery issues.

3) System issues.

Step 3, remove the battery (if you can't disassemble it, don't force it to dismantle), use the universal charge to flush, if it is a problem with the charging interface of the mobile phone, if not, then continue to investigate, there may be a problem:

1) Battery. 2) System.

Step 4, change the battery to see if it can rush in, if you can charge it after changing the battery, it is likely that the battery is scrapped. Just change the battery. If it still can't be charged, then it can only be a problem with the system.

Note that the battery is best original or buy *** commercial battery.

Step 5, many people do not understand how the system will affect whether the charge is not charged, taking the Android system as an example, there is a file in the log of the Android system that records the battery information, if the battery information is wrong, it will cause the mobile phone to not be charged.

How to solve the problem that the mobile phone charger cannot be charged.

Method. 1. The charger or data cable is broken: This can be replaced with a charger or data cable.

Note: Please try to choose the original one for replacement, so that it will not cause harm to the mobile phone. If you think that the original one is not good, you can buy a charger with *** point, but pay attention to the parameters of the charger must be the same as your original one.

If the current is too high, it may cause damage to the motherboard of the phone.

Method. Second, the problem of the mobile phone interface: This is caused by the poor charging interface of the mobile phone, such as loose. Please go to a professional mobile phone shop for repair, do not disassemble the phone by yourself.

Method. Fourth, the problem of system ROM: For the problem of system ROM, please make sure to have a certain experience in flashing or knowledge of mobile phone system. You can choose to re-flash the device to try it or use the following method to clear the system's battery information.

Method. 5. Make sure your phone is rooted: Enter Recovery mode, select Wipe, then wipe battery status, and then reboot. If recovery only wipes data or factory reset, back up all the data in wipe!

1) The charger is broken.

2) The cable is broken.

3) The mobile phone interface is broken.

4) The battery is broken.

If you can't do it, you'll have to buy a new one!