The phone is not charging from usb pc. Why is my phone not charging via USB from my computer? What to do? Why the phone is not charging from the charger

Many who own Apple technology will agree that sometimes it can be very capricious and forces you to buy only original devices for it. But all this is not connected with the fact that to shake out the money from you to the maximum (although there is some truth in this too), but to ensure the long service life of the device. Today I will analyze such a problem: the iPhone is not charging in the car from usb. And also, I will tell you how to solve it and why it occurs at all.

iPhone does not charge in the car from the radio or cigarette lighter - solution

As I wrote above - the technique from Apple whimsical not without reason. If your Android phone is quietly charging from the cigarette lighter, and the iPhone flatly refuses, then there may be several reasons:

1. Unstable voltage
2. Non-original device (cable, or device that is installed in the cigarette lighter)
3. radio tape recorder
4. USB connector

And now in order to each problem. In the first two cases, the device is most often to blame, which is not able to maintain a normal current for charging. Usually these are "No name" manufacturers, so buying a branded cigarette lighter socket should solve the iPhone charging problem. Many car owners speak well of the Belkin charger. In rare cases, the problem may lie in the wiring of the machine itself, and here it is already necessary to contact specialists. recognize this problem a regular multimeter will help you, which costs from 200 rubles. You measure the voltage in the cigarette lighter itself, after which it will be clear - the problem is in the wiring or cigarette lighter of the car or in the device. which you bought.

The next problem why the iPhone does not charge in the car from usb may lie in the radio. You can find out its presence using the same multimeter. After measuring the voltage, everything will fall into place. For normal operation of the device, 1 ampere is needed, if measuring device gives out more - there is nothing to worry about. It’s another matter if you get less than 1 ampere, since such a voltage can not only simply not charge your iPhone, but also damage the battery or even render it unusable.

And the last reason why the iPhone does not charge in the car from usb is the USB connector itself. Namely, if you have USB 2.0, then the iPad, for example, will charge, but the iPhone will not. The solution to this problem is very simple - buy a device with a USB 3.0 port. It is worth saying - any consultant will assure you that all devices are currently compatible with USB 2.0, but this applies to data transfer. That is, USB 2.0 has a much lower speed than USB 3.0, but USB 2.0 has a current of 500 mA, while USB 3.0 has 950 mA, which is why there is a problem charging an iPhone when using an older generation USB port .

Precautions for Using Apple Phones

In conclusion, I will say: in order for your iPhone to last a long time, it is advisable to use original chargers, usb cable. If you use memory devices from other manufacturers, try not to take Chinese counterparts and always look at specifications. This will save you from re-purchase, as well as your phone from handing over to the workshop. Using cheap analogues, you spoil the battery, and there is always a risk of simply “burning” the board on your iPhone.

The battery is the weak point of any laptop. The older he gets, the faster the battery drains. Therefore, the issue of recharging it becomes more and more acute, and the charger is not always at hand. Can I charge a laptop via USB port from another computer or from an external PowerBank battery? Let's try to understand this issue.

If I had been asked such a question a few years ago, I would have answered with confidence that no, you can’t! Indeed, before the USB port on a laptop was used exclusively for connecting peripherals. Yes, it was possible to recharge a phone or tablet from it, but it had no reverse action. A special power supply was used to charge the battery. Moreover, often each manufacturer had it with its own, individual connector, which was terribly inconvenient. Especially on the go.

But time passes and everything changes. At the most latest models laptops, netbooks and ultrabooks to connect the power supply began to be used new port USB 3.1. This is the so-called Type C connector. This is what it looks like:

So thanks to technological progress, you can finally use usb ports to charge a laptop.

What are the differences between ports

The fact is that the USB standard itself was developed quite a long time ago, back in 1994. And then the question of supplying pure power through this bus did not stand at all. Later, for more than 20 years, quite a few types of USB connectors were invented:

But only all of them were united by the fact that they could not provide power transmission of more than 4.5 watts. If this was more or less enough for a smartphone or tablet, then for a laptop you need at least 30, and preferably 50 and above. Accordingly, charging a laptop via USB was out of the question until a more energy-intensive variety appeared. And it became Type C. In size, it is almost two times smaller than the usual port of the 2.0 / 3.0 standard:

But it may well provide the transfer of current with a power of up to 100 watts in both directions - that is, both to the connected devices and from them to the host. This is quite enough not only for ordinary models, but even for gaming laptops. You can take one or two powerful power banks with you on the road and not worry about not having an outlet at hand!

But what about the owners of old models?

Unfortunately, they will not be able to charge a laptop via a USB port under any circumstances. They just don't know how to do it. How to be in this case? Just buy an extra battery and carry it with you. Well, or, as an option, save money to buy a new one. mobile computer. You can argue - you can’t save up money for this! But if your work depends on it, then maybe it makes sense to invest? You decide! Good luck!

The most common failure for most laptop users is a non-charging battery when the power supply is on.

It happens that this trouble happens with a new (just purchased) laptop.

There are some variations on this.

For example, the system reports a connected battery, but does not charge.

Also, the laptop itself may not respond to the connection to the outlet.

Let's look at the most common causes of why charging is not going on.

Weak voltage

One of the most common reasons - you see that in the Windows notification area there is a system message that the battery is charging, and in brackets - "Connected, not charging".

Alert area message

Check mains voltage.

Maybe the problem is in the whole apartment or a specific outlet.

Plug it in and see.

Cord problem

The wire may break under the braid.

In this case, you need to check the voltage with a tester.

If not, then connect to another device or use a working power supply (and you know that it works for sure).

Often, many do not have such opportunities and need to buy new adapter.

Battery overheating

With this option, the system stops charging so as not to damage the laptop battery itself.

If you just plugged it into the outlet and it is charging normally, and after a few minutes it suddenly stopped, then the reason is the overheating of the battery itself.

No charge with good power supply

When you returned from the store with a brand new laptop, you found that it was not charging and at the same time a license system was preinstalled on it?

In this case, there may be a factory defect, which is unlikely, or incorrect battery initialization (problem with the controller).

We perform the following actions:

• Turning off the laptop
• Unplug cord from laptop
• Pull out the removable battery
• Press the start key, holding it for 15-20 seconds
• Putting the battery back in place
• We connect the battery
• Turn on the laptop

These steps don't always help, but at least they're safe, easy to do, and save you time if the problem is fixed.

There are two other variations of this method:

1. Only for the case with a removable battery - turn off the charging, pull out the battery, then press the power key and hold for a minute.

After we connect in the following sequence: battery - charger.

The laptop must be left off for at least 15 minutes, then turned on.

2. When the laptop is turned on, turn off the charging without removing the battery.

Press the start button while holding full shutdown(on most computers until it clicks) one more minute.

After the done, we connect the charging and after 15 minutes, turn on the laptop.

BIOS problem

If none of the above worked, then the problem with laptop power management and charging may be due to early version BIOS.

In this case, resetting BIOS settings will help the owner of the computer. To do this, we perform the following actions:

• Turn off the device
• We take out the battery
• Disconnecting the charger from the network
• Press the start key and hold it for a minute
• Connect laptop to outlet without battery
• Turn on and go to BIOS

Entering BIOS for various laptop models

• Acer- keys such as F1, F2 or Del.
• Asus- F2 or Del keys.
• Lenovo- same keys as in previous cases or F12
• HP- you can press the same buttons or Esc.

Other netbook/notebook models use the same keys as described above during boot.

1. Find an item Load Defaults(it's in the EXIT menu).

In this way, you will set the default settings that are optimal for your laptop.

3. Turn off the charging, insert the battery and you can start the computer.

After completing these steps, the system reports correct charging and detection of the battery.

Use the next step if none of the above helped.

Find downloads on the official website of the manufacturer of your brand of computer, in the section "Support" download and install updated version BIOS.

Make no mistake with your device model!

ACPI and chipset drivers

You can fix them in the following ways.

The first of them can help, if yesterday your charging was working, but today it stopped, then we follow this algorithm:

We go into the device manager (using the menu, by clicking right click mouse on "Start")

In chapter "Batteries" find "Microsoft API Compliant Management Battery" or similar in name, see if it is in the device manager.

If it is not there, then this can indicate both a malfunction and a lack of contact.

Click on it with the right mouse button and select the item "Delete".

Confirm the deletion by clicking OK

After that, be sure to restart the laptop through the item

Crash after Windows update

If you have a charging problem after reinstalling or updating Windows systems, then most likely you do not have the original chipset drivers and power management from the manufacturer.

Moreover, in the device manager itself, the presence of installed drivers no updates for them.

In this option, we go to the official website of the manufacturer of your device, download and install the drivers for your laptop model.

To guide you? Here are their names below:

• Intel Management Engine Interface
• ATKACPI (for Asus)
• Separate ACPI drivers

There are also other system drivers. And software(Power Manage or for Lenovo and HP laptops - Energy Management).

power unit

If the battery is connected while it seems to be charging, but in fact it is not, then you need to try all the troubleshooting methods described above.

Did not help?

Then the most likely cause of this problem lies in power supply failure.

See if the indicator of the unit itself (if any) is on.

When the device does not turn on without an adapter, then the adapter is most likely the cause (but it may be in the connectors or electronic components devices).

There are cases of malfunction of both the charger itself and the controller on it.

And there are also problems with the laptop connector or battery connector - oxidized or damaged contacts.

These same items are the cause of problems with the adapter even when there are no charging notifications in the Windows system notification area at all.

In this variant, the computer runs on battery power and simply “does not see” the connected power supply.

Extra programs

If you have completed all the previous steps, but you understand that your device is quickly “eating up” the charge, then you need to pay attention to running programs in the background.

To do this, open the task manager by holding the key combination Ctrl + Shift + Esc and analyze the processor usage.

We need to sort those applications from the list that use the processor the most, and watch them for a few minutes.

By removing programs running in the background, we will extend the battery life.

Check battery wear

There are cases when old battery not charging or not fully charged.

This happens when using very frequent charge/discharge cycles. Thus, the capacity of the battery itself decreases, people say "quickly sits down."

And it turns out that it is very quickly discharged and not fully charged.

The question arises how to know real capacity battery and how worn it is?

You can take your laptop to service center, but you can try to solve this problem yourself.

First way

Check these options via the command line.

Go to the start menu and command line enter

and press Enter.

Or at the command line enter

powercfg energy

plus the Enter key.

If the system asks for administrator access, then you need to log in with account administrator

After that, a notification about the operation of the system should appear, and the report will be generated in 30 seconds.

In our version, the system placed it at the address " C:\Windows\System32\energy-report.htm«.

After that, go to the folder with the report, then copy it to the desktop and open it.

After that, in the file that opens, look for the line that contains information about the battery.

We are interested in the last two lines, which are highlighted with a yellow arrow.

New laptop with battery

This is a more significant problem, but before running to the store where you bought it, I advise you to reset the BIOS settings (how to do this is described above)

Be sure to check the markings on the new and old battery.

Pay special attention to the fact that you need to buy a new adapter either with a laptop or take the old one with you.

Repair the battery or buy a new one?

If you know someone who can do this, please contact them.

But you need to understand that this process is very time-consuming, requires considerable skills and practice.

Unfortunately, many companies assure you that they will help you, but in fact they only need your money, and after the intervention of "such specialists" you will have to buy a new battery.

By the way, the cost of such services is often the same price as a new battery.

Today, the electronics market is overflowing with offers.

And you can easily get a high-quality Chinese-made battery, which is not inferior in quality to the original, but at the same time it costs an order of magnitude cheaper.

In any case, do not be discouraged, follow the points in this article.

If on your own you did not manage to deal with this problem, then contact a good service center.

Remember that the battery of the device must be treated with care, as it is a consumable item that can very easily fail.

If it happens to you that charging is on, but the smartphone is not charging, read the article. It describes all the problems and ways to solve them.

The main advantage of any smartphone, like any other mobile device, is to keep the battery charged for a long time. But you still need to recharge the gadget.

• Previously, companies producing such devices equipped mobile devices with special original connectors.
• It was possible to turn on the device for charging only in the outlet using the branded “charging” provided by the manufacturer.
• Now mobile devices are equipped with universal micro-USB connectors on Android devices and USB type C - on new gadgets with latest versions OS Android and iOS.
• This helped to make the use of the device simple for the user, losing the cable is no longer a problem, since you can charge the device from a PC. But what if you can’t add charge to your smartphone using this charging method? Look for the answer further in the text.

Why is the Android phone and iPhone not charging via USB from a computer, laptop, from charging from the network?

If you connect your smartphone to charge from a computer or laptop, and the charging percentages do not increase, the reasons can be very different. Let's understand in more detail. It is worth noting several main reasons why the Android phone and iPhone are not charging via USB from a computer, laptop, or from charging from the mains. Let's consider them in more detail:

System glitch in the device program.

• If the OS is frozen, the controller does not give a command to transfer current to the battery.
• To get rid of this problem is simple: reboot the device by holding the on / off or Home key for a few seconds.
• Then turn on the device and connect to the computer to charge.

The problem is in the firmware.

• Often this problem occurs with iPhones. If you recently updated the firmware, and suddenly the phone stopped charging, then roll back.
• But to perform this action, you need backup copy which you should have done earlier.
• Such restoration is performed through iTunes. Just click on the program Restore from copy».
• If you do not have a system in reserve, then do a factory reset. But keep in mind that in this case you will lose all photos, music and video files.

Malfunction charger

• The charging block can quickly break down, especially if it is Chinese and cheap.
• Charge expensive smartphones You only need a corporate block. From the use of "left charging" there can be the most unpleasant consequences: rapid battery wear, device breakdown, or even its unexpected explosion.
• Try connecting your device to your computer with a different cable.

Lightning cable failure

• Even if such a cable looks great on the outside, it can still be faulty.
• Try another cable of the same kind. If charging goes on, then the problem is in the old cable and you need to buy a new one.

Glitch in the Lightning port

• This is often the case with iPhones.
• It's not always a breakdown. The cause of the problem may be dust and dirt. This will be visible if you look into the port.
• If you can see that there is a lot of dust in the hole, then carefully remove the dirt from the port with a toothpick. The contacts will clear and begin to conduct current.

USB port not working

• The USB port on the PC or laptop may not function or may be low on current or power.
• Connect to another port or charge your smartphone from a wall outlet or PowerBank.

Malfunction in details (battery, cable, etc.)

• If you have already completed all the tips, but the phone still does not charge, then it has some kind of faulty part.
• It happens that water gets into the smartphone and it ceases to function normally.
• In this case, you need to take the device to the service of specialists. They will find the problem and repair the damage.

Charging current shortage

• You can find this out using a tester, usb-doctor, or using special program on the phone.
• If you can’t do it yourself, contact IT-specialists in the service.

Slim cable

• Perhaps the wire is too thin and does not conduct current in the right amount.
• Try using other wires with the charging box instead of recharging from the computer.

Not enough power in the motherboard circuit

• Unlikely, but such cases do happen. Basically, manufacturers adhere to the standard, but such a malfunction must also be taken into account. If the manufacturer still does not declare the function of charging devices via a USB port, then you should not rely on powerful charging currents.
• Contact a specialist if you suspect this problem.

bus washing

• If your computer is designed only to turn on from the periphery, and not to power gadgets, the power may not be enough to charge.
• You should look at the BIOS settings. But it's hard to do it on your own. Contact the experts.

If you doubt the quality of USB ports, then you should purchase a special tester for the charging cable. Its price is small (up to 250 rubles), but you can always find out if this is the cause of the malfunction.

The phone shows that charging is in progress, but it is not charging: what to do, how to charge?

When a mobile device is not charging, this is a disappointment for the user, especially if charging is in progress and the battery remains at zero. In this case, panic begins, because a modern person without a phone is like without hands. What to do and how to charge if the phone shows that it is charging, but not charging? Here possible reasons this problem and ways out of situations:

• Not functioning charging block. Try charging the device through a different wire and block. If it doesn't help, then that's not the problem.
• Faulty phone system. If you are sure that the wire and the charging block are working, and the smartphone says that charging is in progress, but the battery is at zero, then you should contact the specialists with the device. In this case, you need to flash the device or replace the input.
• The battery has failed. The battery in the phone cannot be repaired, and if it fails, you need to buy a new battery. If this part is built into the smartphone, then you will have to purchase a new device.
• Open applications and other services. If you put the device on charge and did not close the applications, and also did not turn off the services, then the charging will go slowly, as the functioning is powered open programs. Disable all applications, programs, services, and especially WI-FI.

It often happens that the phone is on charge for a long time, for example, all night, and the battery charge after that is meager - 1-2%. In this case, the problem is a faulty battery or power controller. In the first case, you can replace the battery and continue to use the device, and in the second case, you need to take the device to professionals for repair.

Video: iPhone4 shows charging but won't charge. We repair the battery cable

If the charge circuit of your device is working (it normally charges from another charger), but it does not charge from the charge you need (for example, through the cigarette lighter), you can do the following:
Replace / repair / remake the cable from the charger to the device being charged (it makes no sense to save on the quality of the wire, often a shorter and thicker cable charges faster)
Replace/repair/modify the charger (a more powerful charger may charge faster, instead of a charger, you can use external battery some have more powerful outputs - about 2 Amperes, it can help if the device is completely discharged)

More
Often the problem is just a USB cable with a lot of resistance (for example, the wires are thin and long). Sometimes the cable can be partially broken (one core remained intact or broken wires are attracted to each other only by insulation), in this place the resistance increases sharply.
When you try to charge with a high current, the voltage drops significantly at a high resistance and becomes insufficient for the device being charged. For data transfer and charging low-current devices, such wires may be suitable, but not for charging devices that require high current. If it is not possible to replace the wire, you can significantly shorten it or cut off the connectors from it and solder them to a wire of a larger cross section, as it will probably no longer work as an information cable.
If the device being charged is turned off (put into sleep mode), then charging will go faster, or even be possible.
Most often, a power supply with a USB connector at the output is used as a memory, in which there are 4 pins: two are 5 Volts direct current and two informational Data + and Data - . The charged device, for correct charging (the task is not to overload the memory, to ensure the fastest possible charge, not to use unidentified or weak charging), tries to calculate the characteristics of the charger through the state of the Data + and Data - signals.
Accordingly, some manufacturers can put jumpers, resistors, and more complex solutions between the contacts of the USB memory connector, with the help of which the device will recognize the memory as original and charge. Without "seeing" the necessary states of information signals, the device will not start charging.
The Micro-USB connector has 5 pins, an additional pin is most often used to recognize the fact that a cable is connected (for example, USB OTG cable- there is a jumper between 4 (ID) and 5 pins) and switching to the master device (host) mode, in some models it can affect the current consumed by the device when charging.
If the rated power, voltage of the charger and other quality characteristics are suitable for charging your device, then the charger can be modified by finding the appropriate circuit.
You can’t cheat the charge circuit (or use a low-current charger in the case when the high-current device being charged does not have a charger power recognition circuit), you can’t use a low-quality cable, since there will probably not be a charge anyway or it will be long, either the charger or the charge circuit in charging device.

The maximum current drawn through the USB bus power lines must not exceed:
USB 2.0 - 500 mA;
USB 3.0 - 900 mA;
USB 3.1 up to 5A.
USB 2.0 is by far the most common - by default, the device is guaranteed a current consumption of up to 100 mA, and after coordination with the host controller - up to 500 mA.
Power supplies with USB output as a rule, they can give much more current than a USB port.
Often, to increase the current received from the USB ports of the computer, a Y-type cable can be used, which allows you to get power from two ports at once.

Ai Charger, APP Charger programs that help you charge your devices faster by getting USB port current greater than 500 mA (probably will not work on any motherboard).

Quick Charge 2.0 - Qualcomm technology that uses a more powerful charger and uses more voltage (Quick Charge 1.0 just meant a more powerful charger - 5 Volts / 2 Amperes)
Output voltage/current: 5V/2A, 9V/2A, 12V/1.67A and 20V
Power - about 18W
Quick Charge 3.0 - Qualcomm technology, compared to 2.0, charge algorithms are mainly optimized, the speed has not increased significantly compared to 2.0. Quick Charge 3.0 asks the device for the required voltage, which can be anywhere from 3.2V to 20V in 200 millivolt increments. Thus, it is provided more choice available voltage readings.

Standards:
Battery Charging v1.2 Spec and Adopters Agreement (BC1.2)
IEC 62680-2:2013 Part 2: Universal serial bus - Micro-USB cables and connectors specification, revision 1.01
IEC 62680-3:2013 Part 3: USB Battery Charging Specification, revision 1.2