The tablet shows charging but does not charge what to do. Why does the tablet only charge when turned off? Changing the charger

Rapid discharge of tablets and phones is a very common problem of devices on the Android system.

Nobody wants to be left without communication at a crucial moment, so many owners are looking for solutions to this problem.

Let's see why gadgets do not charge at all or the battery runs out quickly.

Why is my Android phone or tablet not charging?

Almost all breakdowns of this kind occur due to the failure of either the device itself or the charger. The most frequent of them:

• the battery of the device is out of order;
• Charging port broken
• the charger cord is broken;
• burned some kind of circuit inside the device, responsible for the power supply.

battery not charging

Incorrect operation of the device also takes place, which significantly reduces the service life of both the device itself and its battery.

If the charge indicator is on but nothing happens

If this happens, then perhaps the problem is in the operating system itself. That is, the charge goes on, but the system does not index it. It is worth noting that the battery in the device is a separate element, and even if the indicator is off on the screen, this does not mean that it is not charging. Try rebooting your device, the problem will most likely go away.

Battery failure

If this does not help, then the problem is probably in the battery itself. It’s good if you have a device on hand for which this battery is suitable in order to test the battery. But such cases are rare.

Also test the battery with a voltmeter, if there is no voltage, then it's time to replace it. But such a tool is also not always available to a simple user. In addition, the problem may lie not in the battery itself, but in the internal hardware of the phone. It is even more difficult to determine the cause if the battery is not removable.

Diagnosing a battery failure is not an easy task and it is better to contact a specialist.

Not original cable

If you use charging from another device or bought a Chinese fake on occasion, the problem may lie in the fact that the charger does not match the current and voltage, it simply does not have enough power. Therefore, electricity seems to be coming in, but his battery is not charging. Checking it is easy, you just need to connect your smartphone or tablet to a proprietary charger.

There is no charge through USB from the computer

Often, a computer or laptop is used to charge mobile devices. But in some cases, the PC for some reason does not want to give energy to connected devices.

When you connect the device, a message appears that it is not recognized.

There may be several reasons:

• loose USB socket in the computer;
• a loose micro-USB socket in a mobile device;
• cable damage;
• a smartphone or tablet is connected to the wrong connector;
• clogged socket in the device;
• laptop settings;
• lack of power.

The first two problems can only be solved by a specialist, you need to solder the sockets so that they do not hang out and hold firmly. It is very easy to check whether the connector is loose or not, insert the cable into it and gently move it, if the socket moves, then you need to repair it.

The cable may have broken contacts or other mechanical failure. This problem is easily solved by replacing the cord.

If you have a Desktop PC, then try to insert the cable not into the connector on the front panel of the system unit, but from the back.

If dirt has accumulated in the socket of a smartphone or tablet, then take a match or a toothpick, wrap some cotton wool around it, soak it in alcohol and gently wipe the contacts. A cotton swab will not work in this case, it simply will not fit there.

How to clean the nest

If the device is not charging from the laptop, then it may be in power saving mode and therefore it is not giving a charge. Click on the tray battery icon and select "High performance".

In the case of tablets and some smartphones, it may be that the computer simply does not have enough power to charge the device. Sometimes it can even take charge from the device.

Full discharge also does not help.

If, after a complete discharge, the device does not want to be charged, then most likely you will have to contact a service center. But, before that, you can try to bring your smartphone or tablet back to life on your own. This problem occurs due to the fact that the battery is discharged to such an extent that it can no longer start itself and take a charge.

Before that, be sure to check the charger itself, perhaps the problem is commonplace and the whole thing is in it, and not in a tablet or smartphone.

We take out the battery and without it we connect the device to the network. After that, without turning off the power, insert the battery back and do not touch the device for 20 minutes. After a while, it should start charging normally.

If it didn’t work out, then try charging the battery from the “frog” if you have it at hand. This is a device that allows you to charge batteries directly, without a smartphone or tablet.

Universal charger

If the charge goes on, then the problem is obviously in the device itself, the charging socket may have broken or the circuits have burned out. For diagnostics and repairs, you will have to go to a service center or a private workshop.

Smartphone or tablet stopped charging from the cigarette lighter - what is the reason?

There is an obvious problem: either a faulty charger. The device itself may also be faulty, but if it charges normally from the outlet at home, then it’s not about it.

charger in the car

Most often, all problems arise due to the wrong choice of charger. If possible, then purchase only those that go specifically for your device. Due to the different voltage and voltage settings, the battery simply cannot be charged if the charging is not selected correctly. For another device, it will be just right, but they are not specifically suitable for your model. This is bad universal chargers.

Also check the cable for mechanical damage, it may have frayed somewhere and there is no contact.

The device blinks, but the percentage of charge does not increase

Another problem is that the device is connected to the network, the battery indicator is blinking, but the charge is not going on. If the device has not been subjected to mechanical stress, has not been flooded with water, and you are using a “native” workable charger, then you need to check the battery itself. You can use a frog or insert this battery into another device. If there is the same problem, then you just need to replace the battery.

If the battery is working, then the reason for this behavior lies in the device and diagnostics can only be carried out at a service center.

Something is going wrong

It is possible that the device is charging, but for this it needs to create certain conditions. For example, disable or restart. And even though the food goes on, this should not be normal.

If the charge is only in the off state

Charging should go in any mode, and if the device only charges when it is turned off, this indicates a problem.

The first thing to do is check the charger. Just connect your tablet or smartphone to another charger. Power has begun to flow - it means that your problem is solved with one trip to the store for a new charger.

Secondly, we check the performance of the battery. You need to take another battery and put the device to charge. If the process has started, then old battery is defective and can only be thrown away, it cannot be restored.

If everything is in order, the reason may lie in the installed applications to save power, many of them do not allow the smartphone or tablet to charge normally. Remove them, clean the system with Clean Master or equivalent. After we reboot, connect the charging and see what happens. If the charge goes on, then the whole problem was in the applications, if not, then we are looking for the reason further.

Also, the problem may occur when installing unofficial firmware. There is a conflict and as a result - the tablet or smartphone is charged only in the off state. In order for the device to charge in any mode, return the official firmware. If for some reason this cannot be done, all that remains is to carry it to a service center.

Charging but not completely

If the device charges up to 97-99%, this is normal. The fact is that even in standby mode, various processes take place in it that require energy. Connecting to the network, Wi-Fi, downloading updates, synchronization, and so on simply do not allow the battery to charge to the end.

If the device stops, for example, in the middle of a charge, then it can be:

• in fact, the battery is charged, but the display is incorrect, just restart the device;
• faulty charging - a smartphone or tablet may simply charge very slowly and take longer, or the cable is damaged somewhere;
• the battery can no longer work full force and most likely will soon completely “die”;
• some devices have such a function as a fast charge, that is, when the battery level is low, it charges as quickly as possible, but after reaching a certain percentage it starts charging much more slowly;
• an incomplete charge may be due to a “non-native” battery or charger for the device.

Almost all of these problems are solved by replacing the battery or charger. If it doesn’t help, then the reason may lie in the hardware or operating system, but only a specialist can tell you for sure.

The charge does not go more than 1%

The reasons why the device shows 1% charge are almost the same as in the case of not fully charging:

• device malfunctions (broken cable, socket, OS problems);
• cable problems (not suitable for a particular model, damaged);
• battery malfunctions (outlived its own);
• incorrectly shows the charge level.

Try rebooting the device, if everything also shows 1%, then you can try to calibrate the battery.

Battery shows 1%

Basically, the incorrect display of the charge occurs after installing an unofficial firmware, and the system simply does not know how much the battery was charged before.

Battery calibration

After flashing the device, be sure to calibrate it. Incorrectly shown battery level appears most often because of this. As well as glitches like a sharp jump in the percentage of charge, or when the device works at a low percentage for much longer than it should. Calibration is fairly easy:

• you need to completely discharge the battery, the device should not go to the desktop when loading, maximum - when you turn on, the logo is displayed and the device turns off;
• if the battery is removable - pull it out for 2-3 minutes and insert it back;
• connect the device to the network and wait until it is fully charged;
• without including a smartphone or tablet, we take out the battery and insert it back;
• can now be enabled.

Calibration can be done without using software

These steps should be repeated two or three times for greater accuracy. After that, the problem with incorrect charge display should disappear.

The device runs out of power when turned off

If the device is discharged when it is turned off, then again there are two reasons: either the matter is in the phone itself, or in the batteries.

Try removing the battery and leaving it separate from the device, return it after a while and check the charge level. If it is at zero, then the battery is out of order and needs to be changed.

If not, then the reason is in the device and you cannot solve this problem on your own, you will have to carry it to a service center, because the problem can be anything, from a crooked firmware to a burnt board. This will require extensive testing and tools.

Why does the battery drain quickly

Many factors affect battery performance. Firstly, they, like any device, have their own expiration date, and if you use the device for a long time and intensively, then most likely it's time to change the battery.

Secondly, modern gadgets have a huge number of functions that require energy. The famous Nokia 3310, known for its indestructibility and long battery life, can run on battery power not because it has a super-battery, but because it simply has nothing to spend it on.

The more powerful a smartphone or tablet is, the more energy it needs to maintain its performance and there is no getting around it. By the way, the larger the battery, the more hours it can work, so if you have a powerful device in a thin, stylish case, be prepared and carry a charger with you. The manufacturer also plays a big role, Chinese batteries will work much worse than their European counterparts.

Video: the battery runs out quickly

How to save battery

If you go to the settings of the Android device and click on the Battery, you can see what is being charged. In the first place is always communication with the network. If you want to save energy - turn off Wi-fi, Bluetooth, data transfer when they are not needed.

Applications also consume a lot of energy, especially resource-intensive games. Don't forget to get out of them. Many people are used to just minimizing by pressing the Home button, but programs remain running and consuming battery. There are also applications that are crooked and, in general, should not consume a huge amount of resources, but for some reason they do. You can replace them with more correct counterparts.

Some applications start up and run in the background. Go to settings and disable programs you don't need.

In the settings, select the desired application and click disable

The screen also consumes a lot of energy. The brighter it is, the stronger the consumption. While indoors, it is advisable to make the brightness smaller.

Automatic screen rotation can also be disabled if it is not needed. Save your charge. It can be disabled by opening the top menu. Also, if you use live wallpapers, some visual effects, then the lion's share of the charge goes to them.

The vibration response when you press the screen also wastes quite a lot of precious charge. To turn it off, go to Settings - Sounds - Other sounds.

Battery charges quickly and discharges quickly

This behavior is typical for batteries that have already exhausted their resource and most likely will stop working very soon. There is only one way out - to buy a new battery.

Very rarely, the problem is in the hardware of the device itself. But you can’t solve it on your own, you will have to contact the service center, where they will diagnose and carry out repairs.

Even less often, the problem is in the wrong calibration of the device. How to do it was described above.

And if the device takes a long time to charge, but quickly discharges

First of all, you need to make sure that the battery is working properly and it is not time to replace it. Either we are looking for a device, we rearrange our battery and see how it behaves with it, or we insert another battery into our device. If it's the battery, then it needs to be replaced.

If everything is fine with the battery, then this may be an internal failure, or you have recently installed an application that consumes a lot of energy. Consumption can be viewed in the settings, in the "Battery" section.

How to view battery consumption

Also, some devices can notify the user that his battery will soon fail - a question mark or exclamation mark appears on the battery icon instead of percentages or divisions.

Discharges quickly in standby mode

Again, it could be a faulty battery. If everything is fine with it, then check if you have a lot of programs running in the background. Also, in standby mode, the device can download updates, sync, and perform other actions that require the Internet. And connecting to the network consumes a lot of charge.

In this case, you can prevent the device from doing this, but remember that without updates, the device may not work correctly. To turn it off, go to Google Play, select settings and set "Never" in the "Auto-update" item.

How to disable auto-update apps

Another reason is a problem with the motherboard. But this can only be determined with the help of special equipment, so if turning off the network and applications does not help, then you will have to carry the device to a service center.

Device drains quickly after update

First of all, go to the Play Market and see what was last updated. Then go to Settings, then Applications, select this program and disable it. Battery consumption should be less. In general, it is worth disabling all utilities that you do not use.

Also, due to custom firmware, the charge level may not be displayed correctly. In this case, everything is decided by calibrating the battery.

Battery drains quickly on a new device

If you just bought a device, and it no longer holds a battery, then it is possible:

• the device simply has a weak battery that cannot support all applications;
• if you constantly surf the Internet or play games, then a battery that quickly discharges during constant use is normal, the only thing you can do here is to reduce the use of resource-intensive functions;
• you came across a Chinese fake or a factory defect, you can try to change the device;
• the device just needs to be discharged and fully charged several times, only after that the battery will return to normal.

How to charge an Android device if the socket is broken

If the socket on the device is broken, then you can charge it in several ways. In general, in this case, you need to contact the service center so that they fix the connector, this is not very long. But it happens that a smartphone is needed right now and urgently. The first thing you can try is to move the charging wire, often the socket is not completely broken, but it only charges when it is in a certain position.

To charge a device with a broken socket, devices are used that can charge the battery autonomously. It could be a frog, some call it a crab. This is a device into which any battery is inserted and the whole structure is plugged into a socket. It has indicators that will show when the battery is fully charged.

Charging a battery with a frog

You can also use wireless chargers. But they have several drawbacks:

• not all models support this method of obtaining energy, especially for older devices;
• even if the device supports this charging method, not everyone has a special receiver, you need to buy it separately and attach it to the battery;
• the charger itself and the receiver are quite expensive, and it is often cheaper to fix the socket.

The third charging method is to connect the battery directly. The micro-USB connector is cut off from charging, instead of it two wires will stick out, which we connect to the battery terminals, while we must not forget about the polarity. On the battery there is a markup where the plus is, and where the minus is, you will have to find out with the wiring by typing. After fixing the wiring, turn on the charging to the network and wait until the battery is charged.

Usually the wire with a negative charge is red

How to properly charge your battery to prolong its life

Most battery problems are due to improper use. Batteries have their own expiration date and after a certain number of hours of operation, they will exhaust their resource and become unusable. In order not to speed up this process, you need to follow a few rules:

• do not leave the device to charge for a long time, it must be turned off after the battery is one hundred percent charged, this reduces its life;
• once a month, discharge the battery completely and then fully charge it, that is, calibrate it so that there are no problems with displaying the percentage of charge;
• if you do not use the device for a long time, then store the battery separately.
• do not use the device while it is charging.

As you can see, most battery problems are due to improper use and charging, either due to a defective or failed battery, or due to the charger itself. And in most cases, the solution will be very simple: replacing the faulty component or going to the service. Unfortunately, usually the problems are more in the hardware, and if the circuit fails or the socket breaks, you cannot do without special knowledge and tools.

Many users of Android devices sooner or later face the problem of charging their gadget. It either stops charging at all, or is discharged in a matter of hours. In addition, there are many other problems related to the operation of the charger, battery, etc. So, let's take a closer look at the most common of them and try to find a solution!

Your Android phone or tablet has stopped charging. What to do?

First of all, let's look at the known problems associated with direct charging of devices based on operating system Android. There are several such problems, and each of them has a number of features. Therefore, before proceeding with the solution, make sure that the reason is appropriate.

Check charging

First, you need to check the charger itself. To do this, do the following:

If the charge has increased, everything is in order with the charging itself. If not, look for the specific issue below.

Device shows charging but not charging

This problem is one of the most common. You plug in the charger and see that the phone is charging. Without a shadow of a doubt, you leave it on charge and leave or continue to use it. However, as soon as you take out the charge, the gadget immediately turns off, or it turns out that the percentage of the charge has not moved, or even dropped altogether. There may be several reasons for this behavior of a smartphone (or tablet):

When using chargers of brands other than the brand of the gadget itself, there is a possibility that both the charger and the phone will not work properly. This is due to incompatibility, for example, voltage or other parameters. It is clear that in this case you just need to change the charge to "native". You can buy it if the standard one is broken at any hardware store.

If the charger itself breaks down, the only way out, of course, is to buy a new one. However, it is difficult to “diagnose” such a breakdown. This can be done with a multimeter by checking the stability of the voltage on the charger. It is unlikely that a typical user at home has such a device, so it is better to contact the workshop. But before doing this, check the battery.

"Humpbacks" on a swollen battery

Battery failure is much easier to determine. Turn off your phone or tablet and open the back cover of the device. Carefully remove the battery. Check it for the presence of characteristic "humps". If there are any, then it is swollen and needs to be replaced. Again, you can buy a new battery at any mobile hardware store. Its price is quite acceptable.

Charger cable defects are also quite easy to identify. Unplug the charger from the socket and, closing your fingers on the wire, run them from edge to edge. You will immediately notice if the cable is torn or incorrectly bent.

If you didn't find any of the above, the charging socket on your phone is most likely broken. Usually it is also used to connect the USB cable. Therefore, you can quickly identify the presence of a socket problem by connecting your device to a computer. Repairing the nest at home is not recommended. Contact the master, who will check everything and, if necessary, change. By the way, this service also does not require large expenses.

Device not charging with USB cable

Check the USB cable

If your Android device is charging from the charger, but not from the USB cable, then the problem is most likely in the cable itself. Run the diagnostics below. Most likely you will find the problem.

If none of the above helped you, the problem may be software in nature. Then take the device in for repair.

Smartphone or tablet not charging after being completely discharged

This problem, in most cases, is not a problem at all. This behavior of the gadget may be due to the lack of any backup energy. For example, the car cannot be started if the battery is completely discharged. Approximately the same thing happens with the phone (tablet). To solve the problem, leave it to charge for several hours, and do not try to turn it on. Soon your favorite gadget will "come back to life".

Restoring the battery after a complete discharge

If the device still does not charge, most likely the problem is in the charging unit or battery. We described above how to diagnose them. Well, if this does not help, contact the service center, because the failure of the operating system can also occur.

The tablet is completely discharged and no longer charges or turns on

Such a problem is most likely the quintessence of the other two. Namely:

Carry out the described diagnostics. If it did not help, the error lies in the operating system itself. Then you need the help of a specialist.

The device stopped charging from the cigarette lighter

Charging from the cigarette lighter is defective

If your gadget "refuses" to charge from the cigarette lighter in the car (but in all other cases it charges), it is obvious that the problem is in the cigarette lighter itself or, more likely, in the car charger. In this case, the only solution may be to replace this block.

Device flickers but won't charge

The most common reason for this phone or tablet behavior is CPU overheating. The device, in order to avoid this, is periodically disconnected from charging by software. The presence of such a problem indicates a hardware malfunction of the smartphone itself. Therefore, only professional diagnostics can help.

What if the device is charging, but something goes wrong?

By "something goes wrong" is meant a number of possible "anomalies" in the operation of the gadget. Despite the strangeness of some of the errors, most likely, finding a solution to them is quite simple. The most common faults are described below.

Charging only when switched off

Such an unusual, at first glance, error often has a very prosaic character. If there are no problems with the charging unit and the battery (see the diagnostics of these parts above), then the whole thing is in the installed software. The fact is that often individual programs “come into conflict” with others. The similarity of the executed codes leads to the fact that the device simply does not know what to do: whose request to execute first.

Get rid of bad software

If your device is charging only when turned off, then the error is provoked by a program aimed at working with the battery. An example of such a program could be some kind of "battery charge manager" or something similar. Removing excess software will help to cope with the problem. In addition, do not forget to clear the cache using special programs (use only popular and proven ones, for example, Clean Master).

The device is charging, but not completely

Such a problem, most often, appears in budget tablets and phones from manufacturers, which are popularly called "Chinese". Most likely, when collecting this or that gadget, it was decided to save on costs. Anyway, there are several solutions to this problem.

If none of the above helped, contact the wizard to replace the battery or charger.

The device does not charge more than 1%

One or the other solution to this problem is unlikely to work for everyone. It can be associated with a battery or charging malfunction, or with malicious or low-quality software on the device. To determine what caused this behavior of your gadget, carry out a complete diagnosis of it according to all the above recommendations. If all else fails, contact the service center.

Charging is not performed until the device is rebooted

Charging won't happen until reboot

The appearance of this problem indicates, in most cases, a software malfunction. The cause of such a malfunction may be special programs for working with the battery, which were described earlier. "Clean" your phone or tablet from additional software, and the problem will go away.

Device runs out of power even when turned off

In this case, there is hardly any problem. After all, any phone or tablet spends a small amount of energy even when turned off. For example, you need to keep the clock running on the device or turn on the alarm in time (on some phones it works even when they are turned off), etc.

However, if the discharging of the turned off device occurs too quickly, the battery is most likely broken (swollen or leaking). Check it yourself and, if a breakdown is found, buy a new one.

The device is charging, but shows an incorrect charge value

The presence of this problem can be the first signal for a breakdown of any kind (from those described above). Check all hardware and software of the device. You will surely find the problem without the help of a wizard. Most often, in this case, replacing the battery will help.

The gadget on Android runs out of battery quickly: what is the reason and what is the solution?

Solving the problem of fast discharge

Fast discharging of the device is a very common problem of our time. Any phone or tablet from any manufacturer almost always does not withstand even three or four days of work. And sometimes the time from charge to charge is reduced to several hours. What to do? How to prolong battery life? Let's try to figure it out!

What processes contribute to rapid discharge?

The rapid discharge of an Android device in many cases is associated with reasons such as:

All these problems can be solved without the use of special tools or skills. All it takes is a little care.

Frequent network searching is due to the instability of the coverage of your mobile operator. So, if you are traveling by train, the connection will often be lost, which is why the phone will try to find it again and again. This takes a lot of energy. To avoid running out of juice on the go, turn on Airplane mode. If the search for a network occurs on ordinary days, it may be worth considering changing the operator.

Remember to turn off Wi-Fi when you move away from the hotspot. For example, if you leave it on on your way to work, your phone or tablet will constantly monitor nearby routers. The same applies to GPS, only in this case the connection to satellites is maintained, which also requires energy.

Delete unnecessary programs. If there are none, try choosing the ones you rarely use. Today, almost all Android applications run in the background with some resources, which means that the device needs a lot of energy to support their work.

The device quickly charges and / or quickly discharges

Most of the time this is a battery issue. Most likely, it smudged and the capacity physically fell. Check the battery for bulges as well. Also, uninstall third-party battery management software, if any.

Phone or tablet takes a long time to charge and quickly discharges

What to do if the phone takes a long time to charge?

In this case, we can say with absolute certainty that the device does not have enough battery capacity. Is the battery itself broken, or is there a large number of problems? installed programs, it's hard to tell. Check the battery first to avoid further damage. If everything is in order with it, get rid of unnecessary programs and follow the recommendations about networks mentioned above.

Android device runs out of power quickly in standby mode

This problem is almost identical to the previous two. It doesn't matter if your phone or tablet is in standby mode or you are actively using it. There are always background processes, and battery life depends on their proper organization.

Battery drops sharply

Battery charge drops sharply

If you notice that in some cases the battery power drops suddenly quickly, you should try to determine in which ones. Most likely, some program is running its own code, which requires too many resources. The processor receives a lot of tasks and simply overheats. If it was not possible to determine the "pest", it makes sense to completely reinstall the operating system.

The device began to discharge quickly after the update

This problem is usually faced by owners of older versions of devices. For example, phone samsung galaxy Ace II originally released based on the operating system Android 2.3.6. However, after a while, the manufacturers decided to "please" the owners Ace II new system Android version 4. As it soon turned out, the phone is simply not able to cope with it. In addition to frequent glitches, it began to overheat and, accordingly, quickly discharged.

Odin program

How to be in such a situation? The best solution is to make a backup. That is, you need to reinstall the operating system, returning the previous version. You can do this with the program Odin.

A new device from the store runs out of battery quickly

If you are experiencing this problem, check out the reviews of the same device from other consumers. And if the majority does not complain about the fast discharge, you need to contact the seller with a request to change the product. It is possible that the distributor will redirect you to the manufacturer. In any case, this problem is easily solved.

How to check the battery status of a device?

To find out exactly what percentage of battery charge is on your phone or tablet in this moment, go to "Settings". Find the section there. "Device Information" or something similar. In it you will see the numbers you are interested in. It is useful to do this periodically if you want to know exactly how much continuous work time you have left. Besides, in "Information..." you can find information about which applications consume the most energy, which is also very practical, given what we said above.

In rare cases, a question mark ("?") may be seen on the battery icon. Its appearance indicates that something is wrong with the battery. The problem could be both hardware and software. Therefore, it is necessary to conduct a complete battery diagnosis in order to identify possible defects and / or errors.

How to check the battery for swelling was discussed above. As for smudges, the word speaks for itself. If they are found, the battery must be changed immediately. In addition, contact the master to check if the electrolyte liquid has damaged the device itself.

How to charge an Android device if the socket is broken?

Usage wireless charging

If you need to quickly charge your device before fixing a broken socket, you can purchase a wireless charger. It is a kind of card that is placed on the battery inserted into the phone. However, not all phones and tablets support this feature. In addition, the cost of wireless charging is usually higher than the cost of repairing the socket at a service center. So it's better to wait.

How to properly charge Android devices?

How to properly charge Android devices?

Finally, it should be said that many battery problems are associated with improper or incorrect charging. To avoid these problems from recurring, follow these simple guidelines:

Users of the Android OS, in most cases, speak positively about it. And if negative feedback appears, most often they are associated with problems with battery charging, battery life, etc. However, this article is direct proof that these shortcomings can be easily dealt with. The main thing is to know where to look!

Once again, we analyze the message, which this time was written by Mikhail. He writes the following: “The tablet is about a year old, I put it on charge yesterday, everything seems to be fine, it is charging. But when I looked at the energy reserve an hour later, I was surprised - there is the same figure! That is, the tablet is not charging. What to do?"

We do not have exact initial data, so we will assume several different options.

Reboot your device

The remedy for many diseases is to reboot the gadget. Great help if there is a failure in software. Just reboot your device and plug it in to charge.

By the way, you can try to turn off the tablet and put it on charge from the network. See if it will charge. In such a situation, the energy return is minimal, so the charging time may be slightly reduced.

Charging your tablet from your computer's USB port

The battery capacity of tablets is large, but their screen size is incomparably larger than that of smartphones. It is the screen that requires the most energy.

When you charge a tablet from a USB port, due to its peculiarities, charging is very slow, and sometimes it does not happen at all, because the tablet manages to spend more energy than it receives.

If you are charging your tablet from a computer, do not be surprised that it does not charge - charge it from the mains.

Change your charger

Perhaps the problem is with the charger. The easiest way out is to use another charger from another gadget. If charging starts, albeit slower than usual, it's definitely in the charger.

Sometimes the problem is not with the charger itself, but with the USB cable. So, if it is broken, the tablet may not charge, although some current will be supplied to it, which is reflected on the screen - it is shown that it is charging, but it is not actually charging.

Reset settings or flashing

If nothing helps, do not rush to run to the service. Try doing a factory reset hard reset), and if this does not help, just in case, flash your tablet - you can use the same firmware or an updated one.

Mechanical problems

If it is a matter of mechanical problems, you will probably have to contact the service, because the device needs to be disassembled, and doing it yourself is not so easy, especially if the tablet is considered non-separable (it is collapsible anyway, but it is difficult to remove the back cover for a simple layman) .

The case may be in the battery, which ordered to live for a long time, in the power controller or other problems that could arise if, for example, you dropped your tablet. The master must deal with this.

Battery charging problem is one of the most common tablet computer problems. It is especially common on unnamed items made by Chinese craftsmen: one can even argue that it is typical for $30-50 tablets. Branded models of brands popular in Russia - Asus, Lenovo, Samsung, etc., do not suffer from this so often, but sometimes you have to tinker with them.

The bulk of charging problems are related to the hardware of devices, but some are caused by software failures and are quite easy to fix. Let's talk about the causes of charging "glitches" of tablets and how to "revive" an iron friend on your own, when possible.

Battery wear

Lithium-ion and lithium-polymer batteries, which are used in tablet computers, last less than the device itself: approximately 2-4 years. But their performance is more dependent not on duration, but on operating conditions: the number of charge cycles (battery life) is inversely proportional to the charge-discharge depth: the larger the latter, the faster wear occurs.

As a battery ages, it loses capacity. When it becomes very small, the tablet is discharged from 100% to 0% in less than an hour. In addition, a battery that has exhausted its resource is characterized by an incorrect indication: the system shows a higher or lower charge level than it actually is.

To solve this problem, you guessed it, it is enough to replace the battery with a new one. To do this, you will need the skills of disassembling your gadget and soldering (in tablets, batteries are most often soldered).

When choosing a new battery, look at the following:

• Voltage: 3.7 (3.8 V) or 7.4 V. This indicator must exactly match yours.
• Dimensions: length, width and thickness do not have to be the same as the old one, but the new battery should fit freely in the case. You can't squeeze it.
• Capacitance (in milliamp-hours). Preferably not lower than it was.
• Number of contacts: there can be 2 (plus and minus) or 3 (plus, minus and temperature sensor output). If the old battery had 2 contacts, any one will do (you can not solder the third wire), if 3, it is advisable to take the same one.
• Novelty. The “not the first freshness” battery most likely does not correspond to the declared capacity, since the latter decreases during long-term storage.

Owners of branded devices, such as the Samsung Galaxy Tab 3 or iPad, have an easier choice - they should look for a battery specifically for their model.

Faulty charger (charger)

Charges inexpensive tablets fail quite often. And sometimes they initially do not meet the nominal characteristics. Such a memory can “cunningly pretend” to be working, but the current that it generates is so small that the gadget does not have enough of it (an average tablet computer consumes about 2 A).

When connected to a "half-dead" charger, the following picture is possible:

• The tablet shows charging, but does not charge.
• The tablet charges several times longer than usual.
• The charge level does not rise, but falls, despite the fact that the indicator shows the charging process.

To check this version, connect the device to a known-good memory or external battery, the voltage and current of which correspond to the rating of your charger. If the problem resolves, the charger should be replaced.

By the way, the computer's USB port is not suitable for testing, as it only outputs 0.5 A (USB 2.0) or 0.9 A (USB 3.0) instead of the required two.

Malfunction of the charge and / or power system of the tablet

The problems of the internal power supply system are one of the common causes, which does not charge a Chinese-made tablet. The explanation is the low quality of the element base and assembly.

Devices of well-known manufacturers "get sick" with such an ailment more often through the fault of users. For example, due to the connection to them of cheap, low-quality chargers (especially car chargers), inaccurate handling (falls, bumps), liquid ingress.

Externally, the malfunction manifests itself in many ways:

• The tablet shows charging all the time, including when not connected to the charger. And vice versa: does not detect the power source when it is connected.
• Charging from time to time ceases to be determined.
• The battery drains quickly even after the gadget is turned off.
• The tablet does not turn on, turns off by itself or freezes tightly (until rebooting).
• The charge indicator shows incorrect numbers.
• The tablet gets very hot while charging.

Attention! Excessive heat during charging may indicate battery damage. It is impossible to operate and charge such a device: faulty lithium batteries tend to ignite and even explode!

The culprit of the problem may be a connector, a power controller chip (it also controls charging), its strapping elements, or a battery. At home, without knowledge of electrical engineering and diagnostic tools, the problem cannot be solved, so it is best to take the gadget to specialists.

Software failure, viruses

The reason that the tablet takes too long to charge and quickly discharges may be banal viruses. Some of them imperceptibly for the owner use the computing resources of the processor, Wi-Fi, cellular communications, turn on the camera and microphone. This consumes additional energy.

We recently reported. The tips given in that article are also relevant for other devices: in case of any suspicion of infection, immediately scan the system and removable media with a good antivirus.

Software failures of a different origin (not related to viruses) may manifest themselves with the following symptoms:

• Incorrect charge indication.
• Too fast discharging.
• Incomplete charge (when a certain indicator is reached - less than 100%, the charge level stops increasing).
• The device “thinks” that it is charging when the charger is not even connected to it.

To resolve this problem, try the following (one does not help - go to the second, etc.):

• Remove applications that you installed the day before the crash.
• Carry out 2-3 full discharge cycles (before turning off) and then charge the battery for 6-8 hours.
• Do a factory reset of your operating system.

Battery overdischarge

Tablet batteries operate in a narrow voltage range: from 4.1-4.3 V to 2.7-3.3 V. A higher indicator corresponds to 100% charge, a smaller one - 0%. When the voltage drops below the threshold level, the protective controller (a small scarf connected to the battery cells) disconnects the battery from current consumers (tablet devices) in order to prevent further discharge and failure. But at the same time, the battery is also disconnected from the charge circuit, that is, it loses the ability not only to discharge, but also to replenish electricity reserves.

When the charge level drops to 10-15%, the tablet, in theory, should turn off, but sometimes this does not happen. As a result, overdischarge occurs, and the gadget stops responding to the connection of the memory to it.

In order for the battery to regain the ability to charge, the voltage of its cell must rise to 2.7-3.3 V. This can be achieved in two ways: slow and fast.

• The "slow" method is very simple: connect the charger to the tablet, plug it into the mains and leave it for several hours. Protective controllers of lithium batteries are able to detect the connected charger and, when voltage appears at the terminals, allow charging.
• Fast way or, as it is called, the battery "boost", is only recommended for advanced users. Restore with it normal function charging can be done in 10-30 minutes, but this requires some knowledge of electrical engineering and the ability to disassemble your tablet. Let's dwell on it in more detail.

How to "push" a dead lithium battery

For this you will need:

• Voltmeter.
• Soldering iron (optional).

Operating procedure:

• Cut off the connector from the charger and strip the ends of the wires 3-5 mm. Use a voltmeter to determine the positive and negative wires. The first is usually red, the second is black.
• Connect a resistor to the positive wire (you can just screw it on, but it's better to solder it).
• Disassemble the tablet. Connect the negative cable of the charger (solder or glue it with adhesive tape) to the battery terminal marked with a (-) sign, the other end of the resistor to the terminal with a (+) sign.

• Plug the charger into an outlet.
• After the voltage at the battery terminals rises to 3.3 V, remove the structure and connect the tablet to a power source through the connector. Now it will charge as usual.

Attention! In the process of "pushing" be sure to control the temperature of the battery with your hand. If it begins to noticeably heat up, immediately disconnect it from the power source.

The reason that the tablet is not charging may be the failure of the power controller or battery. But more often than not, things are much simpler. The owner is faced with either insufficiently powerful power sources, or misunderstands the power consumption pattern of the device. It is quite easy to determine why a tablet, especially a recently purchased one, is not charging.

If the device shows charging, but does not charge, there may be only three possible reasons.

Completely discharged and won't turn on for charging

If the tablet is completely discharged and is not charging, this means that the battery has depleted below the allowable limit. In this case, the power controller does not supply the optimal charging current. You can try to revive the battery in the following ways.

1. By connecting the tablet to the network with the supplied adapter, the device is left for 8 hours or more. In this case, the battery is serviced by a minimum charging current and restored to acceptable levels.
2. Remove the battery, if possible, to charging with high currents on a special device. This can be done for Samsung, Lenovo devices and other products of well-known brands.
3. Opening the case disconnect battery from motherboard for later charging. This will have to be done on inexpensive devices, for example, the Digma brand or products from Chinese manufacturers.

Advice! To charge the battery, you can use the Frog adapter or make a handicraft device from a power adapter and a pair of pins.

Flashing and not charging

Constant charging failure means power mismatch. In this case, the controller tries to apply current to the battery and an emergency stop is triggered. As a result, the tablet flashes when charging and does not charge.

This can occur when using an adapter that does not match the system settings. For example, with incorrect pin assignment or voltage level. This situation is dangerous.

Does not charge from cigarette lighter and computer port

All reasons for the lack of or slow charging are in the lack of transmitted power.. When connected to a cigarette lighter or PC port, part of the voltage is distributed to the cable. As a result, the tablet takes a long time to charge. The solution to the problem looks like using a shorter and thicker cable.

When charging from a PC, if the tablet is charging slowly or not at all, you should first replace the wire and try connecting to a different port. It will also not be superfluous check system settings. By default, power scenarios set the option to disable the USB port or put it to sleep when there is no activity. In this case, the tablet simply does not receive power.

Doesn't hold a charge

There can be several reasons for the rapid loss of charge even in standby mode.

1. The tablet does not hold a charge due to battery breakdown. This may be a manufacturing defect or the result of improper operation. Shorting the battery internally drains power quickly, even when the device is completely turned off.
2. In standby background processes are running. It is worth turning off network exchange, bluetooth, and other energy-intensive hardware modules. If the battery is still draining, it is worth monitoring all work processes.
3. The third reason why the tablet does not hold a charge is battery wear. The battery does not gain charge, loses it due to internal processes.

Other problems

If the tablet only charges when it is turned off, then the level of energy consumption is equal to its consumption. Turn on power saving mode, close resource-intensive applications, or use a more powerful power adapter.

When the tablet is very charging slowly, the reason must be sought in the mismatch of the charger with the requirements of the system. For example, an adapter from another device is used. The system determines the discrepancy between the parameters and automatically switches to slow charging mode. The second reason lies in the insufficient power of the adapter.

If the tablet fast charging and fast discharging There is only one reason for this: you need to change the battery. The battery may have become too cold due to the device being carried in a bag for a long time. Or physically wear out, having exhausted the entire number of optimal charge-discharge cycles.

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