How to charge a Samsung laptop battery directly. Charging a laptop: basic rules for every day. You are here: How to charge a laptop battery directly, without a laptop. Temperature is harmful to the battery

Surely many laptop owners have had this problem when there is no way to recharge the battery without the device itself. In this article we will look at several interesting ways who will help you out in a critical situation.

Since recharging methods that are not provided for by the technological specifics of the laptop and energy storage device can lead to the laptop failing, you must follow all safety rules and do everything carefully so as not to damage the battery.

Important! In some situations, not just one cell is at risk, but also the PC itself, which you plan to use in the future.

Looking ahead, we would like to immediately warn you that to charge the battery without a laptop you will need certain equipment or parts that are not always easy to obtain, so we recommend choosing the method that will be more suitable for your case.

This option for recharging the battery is the most risky and at the same time it is the only method of its kind that will help charge the battery without a factory power cord. To do this, you should stock up on some tools and parts that you will find in an electronics store.

The list of necessary tools is as follows:

multimeter;
power adapter (power higher than battery);
5-6 copper wires.

In addition, you will also need a soldering iron and electrical tape, which will make it safe and improve the process of creating an external adapter for your laptop.

After the preparation process, you can begin the initial inspection and the first steps for connection.

Remove the battery from the laptop and carefully inspect the contacts. Typically, all modern batteries have an improved VDS (voltage distribution system), which is why the number of terminals can vary from 4 to 7;
sometimes the contacts in such energy cells have special markings that indicate the polarity of the contacts;
If you don't find the visible marks that the manufacturer should have applied, consider the battery. Often information about terminal accessories is placed on it;
but in the absence of “hints” you will need a multimeter with which you check each terminal for the “+” or “-” value.

Attention! Sometimes there are situations where the contacts are protected by “walls” of plastic, which will become a problem for checking the polarity with a multimeter. You can use paper clips, bent them first, or needles to find out the necessary information.

Typically the required contacts are the outer segments (left&right).

Note! Needles and paper clips will become an alternative to wire, but only with good throughput.

After preparation, the remaining steps are divided into two separate methods - it all depends on what kind of power supply you have. For greater reliability, we recommend using only the first method.

In the first option, we will not need the laptop itself, but a regular power supply from it. You can replace it with a similar one, taking into account the characteristics and requirements of the battery. In addition, you will need a socket that will fit the power supply plug. It is quite possible not to use a plug if you know the exact pinout and know how to use a soldering iron.

On a note! Alternative option will be the use of battery wires, which we immediately attach to the plug terminals (provided that you do not have a suitable input).

In such devices, only one circuit works, where the segment in the middle is positive, and the one on the edge is negative. Ready!

The plug has a standard circuit for connecting wires directly, the segment in the middle is positive, the edge is negative

How to charge a laptop battery without a power supply

Now let's look at the second method. This time you won't need to use a laptop adapter. Everything is much simpler here.

At this step the methods end. It remains only to note a couple of points regarding safety precautions. They apply to both methods and are described taking into account the individual characteristics of a given charging case.

I would also like to add that the multimeter must be connected to the entire structure while charging is in progress so that you can monitor the voltage. Ideally, the indicator will increase smoothly, and when completed it will be slightly higher than the final battery voltage.

Using a new battery

Everyone knows that new, just purchased batteries are already fully charged and are quite suitable for immediately starting work without recharging. This means that you only need to buy new battery and use it for your own purposes.

The method is simple, but not the most economically profitable, although it is much better than using radical methods. Suitable for those who urgently need to finish the work they started on their PC and who have an extra couple of thousand.

It would be unfair not to say that after such manipulations, even if all the rules are perfectly followed, the battery endurance will become lower, and the recharging frequency will become an order of magnitude higher. If you have any problems, you can always ask a question using the comment form.

Video - How to charge a battery without a laptop

It's actually useful to have several spare batteries for your laptop, especially on long trips and hikes. The only question is how and where to charge them. The standard method that comes to mind is to insert them sequentially into the laptop and charge them one by one - good, but inconvenient.

The first is time, which you won't have if you use spare batteries regularly rather than occasionally. And secondly, the battery mount is not designed to be plugged in and out several times a day. It is very flimsy and will not last long.

It is good to charge the battery directly from the laptop, without the laptop itself, but how to do that? After all, there are a bunch of contacts on the battery through which the laptop monitors whether the battery is properly charged, and it’s not clear how to charge this battery without a laptop. Previously, in the old days, laptop manufacturers produced separate devices for charging spare batteries, but for 7-8 years now this practice has been stopped.

On forums on the Internet there are various cunning schemes for desoldering and charging individual brands of batteries, but it is unlikely that you will find a diagram of your particular battery among these diagrams. And all these numerous contacts on the battery exist for a reason. After all, it consists of series-parallel connected lithium cells, which can explode when overcharged, and if discharged too deeply, they can immediately fail. Therefore, it is necessary to carefully control the voltage on each of the elements. And since they have a range of parameters, when connected in series they will be charged unevenly, to different voltages, which is unacceptable and a fire hazard for lithium cells. That's why there are so many contacts to control and charge each element separately.

Everything described above is pure truth. However, as often happens, the truth has nothing to do with current practical reality. Indeed, after lithium cells began to be used in laptop batteries, all laptops began to be equipped with battery charge controllers, and manufacturers began to produce special chargers to charge batteries outside the laptop.

Always carry a spare charged battery with you. This will save you in case of unexpected discharge of the main power source.

Sources:

li ion batteries for phones

Lithium or lithium-ion batteries most often found in modern cell phones. As a rule, such a battery allows you to increase the operating time of the phone without recharging.

Instructions

If you have just purchased a mobile device equipped with a lithium battery and want to maximize its service life, first of all read the technical data sheet of the device and recommendations for its operation and charging. As a rule, each model of phone or portable player has its own fixed time during which the battery reaches full charge. If for some reason you cannot use the manufacturer's recommendation, adhere to the following general rules for using lithium batteries.

To ensure long-term operation of the battery, it should be “pumped”, that is, its work should be increased through a series of maximum charges and discharges. Insert the battery into your device. If there is still a charge in the battery, it is recommended to “deplete” it by turning off the device completely. Turn on as many apps as possible to help your phone drain battery power faster. Pretty soon the battery will run out and the phone will turn off. After this, charge the switched off phone or player into the network using only the factory charger, which guarantees the safe operation of the device.

Typically lithium batteries Charge to capacity in a few hours. However, the first charge should be at least 12 hours, and it is advisable not to interrupt it or remove the charger from the outlet.

After 12 hours of charging, start using your electronic device. Do not charge it until the phone turns itself off due to a dead battery. When you first start using a lithium battery, you should perform at least three full charges and discharges to “overclock” the battery. After this, you can use the device as usual and charge it as needed. “Pumped” lithium batteries do not require 100% charging or discharging.

Failure to charge a laptop battery is one of the most common problems. This problem most often occurs after three years of operation of the device. There may be several reasons in this case - from a breakdown of the laptop itself to damage to the contacts in the power supply.

How to determine the cause

Experts note that most problems with laptops arise when they are used incorrectly. For example, some owners of such devices almost never turn them off, using the simple method of closing the lid. In this position, the system goes into sleep mode, but the laptop continues to work. Such actions can be the main reason for the battery indicator to malfunction.

First of all, it is necessary to determine the source of the problem. If the laptop does not turn on, the screen does not function and no visible processes occur, then most likely the culprit in this case is a faulty battery. If the laptop turns on and functions normally with the charging turned on, but turns off without it, then the cause of the malfunction is the power supply.

If, when inspecting the laptop, you notice any damage - cracks on the cord, foreign objects in the connector sockets, or problems with the device’s body, then it is better to immediately take the computer to a center for diagnostics.

Carefully inspect the laptop. All connectors must be inserted correctly and firmly into their respective sockets. The cause of the malfunction may be not only in the laptop itself, but also in the power outlet. That's why try moving your laptop to another room and turn it on from a new power source.

The laptop battery may not charge due to a malfunction of the charger itself. The easiest way to identify this problem is to replace the power supply. If the laptop works normally with another device, then simply purchase another charger.

A more serious problem is the breakdown of the laptop itself. Without special knowledge and skills, you will not be able to repair it. It is better to have the device checked at a service center or use any salon that provides such services.

What to do

To identify a faulty laptop battery, try a few tricks. First, discharge the device completely. This method is only relevant if the battery has stopped charging 100% and the laptop is still working. After this manipulation, turn on the power supply and wait for the charging process to complete. If the battery indicator has reached the desired level, then you have nothing to worry about.

Some manufacturers place certain restrictions on the battery charge indicators. In this case, not only 100% can be considered the norm.

Please note that most faults can only be identified based on special diagnostic data. If the power supply is functioning normally, the reason for the battery not charging may be internal damage to the connector, a broken printed circuit board, or burnt out traces.

Tablets and laptops are amazingly convenient mobile devices, but their service life depends not only on the motherboard and memory reliability, but also on the battery that powers the device. To prevent your laptop battery from failing you at the most inopportune moment, charge it correctly.

Basically all modern laptops are equipped with lithium ion battery y, while all laptop computers are equipped with a battery charge/discharge monitoring system, which allows you to determine the critical power level.

Low battery charge extends battery life

If you plan to leave your laptop idle for for a long time, then it is recommended to reduce the charge of its battery to 45 - 70%, since with such a charge the battery is stored better and longer. It is even better to remove the battery altogether, but this cannot be done in all-in-one PCs or netbooks.

When using a laptop, do not allow the battery to constantly drain completely. It is recommended to discharge the battery to 15-20%, and then connect it to the power supply until its capacity is fully loaded. A full battery discharge cycle should be performed no more than once a month, since modern lithium-ion batteries do not need to be completely discharged.

These batteries can be recharged without harm when discharged to 45-75%.

Do not store discharged batteries for a long time. Such storage may result in loss of battery capacity. In order to keep the battery in working condition, it must be charged within 12–20 hours from the moment it is completely discharged; if the battery is a spare one or remains, for example, from a previous PC, but is not used now, place it in a special container that will help maintain the correct working charge. These devices are very expensive and it is not easy to find them in a store, but you can order them online, for example, on the Chinese equivalent of the e-bay site.

Temperature is harmful to the battery

We must also remember that heating the laptop battery when charging is extremely undesirable; accordingly, the connection to the network should be in places where there are no heating devices and direct sunlight. Also, when charging, you should not place the laptop on the surface of the sofa or on the carpet. This is due to the fact that when charging the battery heats up slightly, it requires natural cooling: for this, the laptop has legs, due to which a distance is created for ventilation between the base and the surface on which it is installed, and the fan also works. Lint and fibers from the cases will prevent the systems from working properly. You can also purchase special stands with an additional fan; such devices will not only save the battery, but also make working on the PC more comfortable.

Do not allow operating batteries to overheat; remember that for Li-Ion, operating temperatures range from 5 to 45 degrees.

Excessive heating of the battery, as well as its rapid discharge, are signs that the battery is failing. Recently, many different programs have appeared with which you can control the process of charging/discharging the battery in a laptop. These programs, including free ones, are available on the Internet. Download one that will notify you about the need to connect your computer to the network with a sound signal, this is very convenient, because it can be difficult to keep track of the small icon in the corner of the monitor.

--
batter 9. battare 10.

note

To extend the life of the battery, discharge it not to 0, but until it reaches 20% of the total charge.

Helpful advice

To increase battery life, use the “energy saver” function.

Sometimes users of laptop computers have a question: how to charge a laptop battery without a laptop, and whether this is possible in principle. If you are going on a long trip or camping trip where there is no possibility of connecting to an electrical outlet, it is useful to have several batteries with you. However, the question arises: how to charge them later, so as not to constantly rearrange the batteries in the device itself and not create additional stress on the fragile mounts.

Autonomous battery charging method

Charging a laptop battery without a laptop has always been a problem: a few years ago, manufacturers offered separate chargers for laptops, but now they are impossible to find on sale, or they are very expensive. It is important to understand: any charging methods without using a laptop or a factory charger are dangerous; they can not only completely damage the battery, but also lead to explosions and other unpleasant consequences.

However, there are always craftsmen who want to charge a laptop battery without a charger, and it is important to know how to make this process as safe as possible. Modern batteries consist of several batteries connected in series or parallel; if overcharged, they overheat and can explode. To protect against such situations, the batteries are equipped with a controller that prevents overcharging.

The built-in power controller simplifies the task: just apply current with a voltage corresponding to the power supply to the input and output terminals, and the controller ensures uniform charge distribution.

Let's take a closer look at one of the charging methods using a power supply:

You need to find the input and output terminals of the battery - according to the standard, they should be the outermost ones. The polarity is either already indicated, or you can check it using a tester.
The power supply contacts are aligned with the battery contacts; you need to check the voltage with a tester. If it drops to the battery voltage, the charging process has begun.
Overcharging must not be allowed. The system is left with a voltmeter connected, and the voltage increase must be monitored. It should not exceed 8.2-8.4V if the battery voltage is 7.4 V.

Charging the battery this way usually takes about 2 hours. If the battery meets safety requirements and is equipped with a controller, then at a certain point the voltage rises to the nominal level and stops. If it does not stop growing, this indicates a malfunction of the controller, and if the process is not stopped, it will end in an explosion and fire.

Is it worth charging a laptop battery without a laptop?

Charging with homemade devices poses a serious threat to the safety of the battery and its owner. There is an alternative solution - the “people's” charger iMax B6, which allows you to increase the voltage in all batteries or only in one of them. This method is also used when restoring the battery after a deep discharge, when normal charging becomes impossible due to the controller.

However, this method is not completely safe and does not guarantee long-term operation of the battery after such charging. The only truly reliable method is charging through a “native” laptop that meets all the parameters. To avoid premature battery discharge, you must follow the rules of use, and if it breaks down, the most reliable solution is to simply buy a new battery.

The need to charge a laptop battery without a laptop arises very rarely, but it does happen. For example, when the “native” connector of the laptop is broken or to solve your non-standard technical problems.

Contents

Is it possible to charge the battery without a laptop?

Thus, there are no technical restrictions on restoring the battery charge of a laptop computer, but it should be understood that in order to connect it yourself, you need to properly manufacture the charger, as well as connect the product, observing the polarity.

To perform such actions, it is advisable to have a good understanding of technology and electrical engineering, but even if you do not have such skills, performing step-by-step recommendations, outlined in this article, will completely restore the functionality of the laptop battery.

What are the main difficulties?

The main difficulty when trying to charge a laptop battery directly is the inability to properly connect the contacts of the charger to the battery terminals. At self-production The charger is very difficult to set the required voltage and current values.

When using a standard charger, difficulties also arise. The charger plug cannot be connected directly to the batteries, and an attempt to solder the wires directly to the plus and minus connectors will render the product unusable.

Many laptop battery models may not have terminal markings, so it can be very difficult to connect the wires while maintaining correct polarity.

In general, there are many difficulties when trying to charge a laptop battery without a laptop, but with the right approach to solving the problem, you can perform this operation without compromising the performance of the charger and laptop computer.

Ways to charge the battery without a laptop

There are several working ways to charge the battery without a laptop, but the most in safe ways are to use standard charging and restore the capacity of each element separately, but we will consider all options.

Connecting the adapter directly to the battery

This method of charging a laptop battery from a standard adapter will completely restore the battery's functionality. Direct charging is carried out in the following sequence:

Remove the battery from the laptop.
Determine the polarity of the terminals.
Connect the charger plug to the battery terminals with pieces of copper wire.

If the polarity is not indicated on the battery case, then even on a very discharged battery you can determine this parameter using a multimeter. If the terminals are protected by a plastic partition and it is impossible to reach the metal part with the tester probe, then two metal clips should be used.

These elements should be installed one by one in the holes of the battery connector and measurements should be taken with a multimeter, which must first be switched to measurement mode direct current. After the device shows a value other than zero and there is no line in front of the numbers, you should fix this position by bending the paperclip to which the red probe of the meter is connected.

This contact will correspond to the plus of the power supply, and the other conductor will be the minus. If the polarity is not indicated on the plug or adapter body, then a similar operation should be done with the electrical output of the charger.

Having decided on the polarity of the battery and adapter, you can begin connecting the charger to the battery. For this purpose it is better to use copper wire. It is advisable to use conductors with different insulation colors to avoid accidental mistakes when connecting the battery.

In order to charge the battery, it is enough to connect the plus of the plug with one wire to the plus of the battery, and with the help of the second wire, perform a similar operation in relation to the negative contact.

This design is quite dangerous; do not touch the exposed wires and make sure that they do not touch wood or paper.

Disassemble the battery and charge the cells separately

The laptop battery consists of several 18650 type li-ion cells, so if the adapter is faulty or the laptop does not charge through the connector, you can disassemble the laptop battery and remove the individual batteries and charge them using a regular charger for AA batteries.

The battery case is usually soldered in two parts, so it is enough to carefully pry it in the middle with a sharp object to separate one part from the other. Then you should remove the batteries and install them in the charger.

When individual elements will be charged 100%, the battery assembly is carried out in reverse order. If in this way it was necessary to restore the battery capacity only once, then the two halves of the product should be connected using glue, but if there is a need to regularly charge the laptop in this way, then it is better to connect the parts of the battery case using tape.

Which laptop batteries can be charged this way?

If the battery can be removed from the laptop case, then it can be easily charged using the methods described above. Currently available on the market a large number of similar devices, among which the following brands can be distinguished:

Asus;
Acer;
Samsung;
Dell;
Xiaomi;
Lenovo;
Sony;

The batteries of these laptop models can be relatively easily disassembled, so to restore the charge, you can use individual cells or charge the product without disassembling the battery by connecting its contacts using conductors to the corresponding contacts of the adapter.

Things are much more complicated with laptops with built-in batteries, where you will have to disassemble half of the device to remove the power source.

Consequences of errors and precautions

When using the methods described in this article to charge a laptop battery, you must take precautions. First of all, polarity reversal should be avoided.

At incorrect connection The battery can be damaged very easily, so before connecting the wires, you need to double-check the position of the positive and negative contacts on the adapter and battery using a multimeter.

When charging a laptop battery without a laptop, you should constantly monitor the battery temperature. If the battery heats up significantly, the charger should be disconnected from the network or the battery should be disconnected if the product is fully charged. You can check the charge of the power source using a conventional multimeter by switching the device to the DC measurement mode.

Do you have any questions or something to add to the article? Then write to us about it in the comments. This will help make the article more complete and useful!

Note:! The article is for informational purposes only. If you don't have enough professional knowledge in the field of electrical engineering, do not attempt to repeat the steps described. Otherwise, at best, as a result of an error, the battery will permanently fail, at worst, an explosion or fire will occur.

How to charge a laptop battery without a laptop?

The need for this arises extremely rarely, and in addition, the rules for the safe use of laptops do not allow this. Therefore, before reading the article, think about the likely consequences of your work.

Charging devices

A few years ago, laptop manufacturers produced additional devices for charging batteries, but no one makes them anymore. You can only find them on AliExpress, where they sell universal devices for any computer models (according to sellers). They consist of a power supply and various adapters with wires. However, if you are not an electronics specialist, you will not be able to connect these devices correctly.

The principle of battery charging using non-standard methods

In older laptop models, equal battery charge controllers were located in the device body. Now, to simplify the design and provide greater safety, the controllers are located in the battery housing.

How to charge a laptop battery without a charger?

Do the following:

Locate the input and output terminals on the battery (usually the outermost terminals, marked plus and minus).
If you are not sure that these are the same terminals, check them with a voltmeter.
Connect to charger. In order to charge a laptop battery without a charger, connect a voltmeter to the power contacts, and them to the battery terminals. The power supply voltage should gradually decrease and become almost equal to the battery voltage.
Check that the controller is working correctly. To do this, do not turn off the voltmeter while charging and sometimes record its readings.
The voltage level should rise until the following values are reached:
If the voltage on the battery reaches the specified values and stops changing, then everything is in order.

However, if the values exceed the specified values, immediately turn off the power - the protection does not work.

Recently, various compact mobile electronic devices have become very popular, allowing you to use all the services and entertainment of the Internet without being “tied” to a specific place - smartphones, tablets, communicators and, above all, laptops.

Of course, in order for mobile devices to be fully mobile, they must be equipped with their own power sources.

This is especially true for the most energy-consuming mobile devices– laptops. The energy source for almost all modern laptops is lithium-ion batteries.

Lithium-ion batteries have replaced nickel-cadmium batteries and have almost completely conquered the mobile device market due to a number of advantages, including:

long service life;
light weight;
compact size;
lower cost;
short charging time;
longer operating time on one charge;
lower price.

However, at work lithium-ion batteries There are certain nuances that must be taken into account if we want the laptop to serve us longer without replacing the battery, because the cost of a new battery can reach a third of the cost of the entire mobile computer. So, let's find out how to charge a laptop correctly.

Secrets of proper charging

Figuring out how to properly charge a laptop battery turned out to be not so easy. There are a lot of opinions on this matter. As you know, everyone knows how to play football, treat any disease and raise other people's children. Nowadays, this list of “general knowledge” can be added to the knowledge of how to charge a laptop battery.

You hear so much about this, including completely opposite opinions. For example, that the battery must certainly be charged only after it has been completely discharged, or, conversely, that the battery must in no case be allowed to discharge below a certain limit. So who should we believe?

It would seem that it would be easier to just take and read the instructions from the manufacturer, which necessarily accompanies the product. The only problem is that the instructions, as a rule, in this aspect are laconic to the point of indecentness. Sometimes information about charging is limited to the fact that for this the battery must be connected to the mains. Nothing to say, valuable information.

There is reason to think that this state of affairs is by no means accidental: income from the sale of components and spare parts can sometimes exceed the profit from the sale of the main product.

For example, we can recall an unadvertised, but by no means secret, fact: the lion’s share of the profits of printer manufacturing companies is not generated by the printers themselves. Maximum profit is derived from the sale of cartridges and consumables.

Of course, the percentage of profit from the sale of batteries relative to the total turnover is not so large, but if we are talking about turnover in the billions, then even a fraction of a percent will amount to millions and hundreds of thousands. Since we can’t count on help from manufacturers, we’ll turn to specialists for help.

Before we talk about correct charging laptop batteries, it is necessary to touch upon general operational issues. For a lithium-ion battery, the temperature regime is important, the optimal ambient temperature is +15-25 degrees, the limiting temperature is +5-45 degrees.
Under no circumstances should you use a battery that is cooled below zero degrees Celsius. If a laptop or battery is brought in from outside, be sure to let the device warm up for at least an hour.
When using a mobile computer at temperatures of 30 degrees or more, it is advisable to use special stands. In addition to the passive effect - providing an additional path for cooling air. Such stands can be equipped with an additional cooler, powered by battery power and connected to the device via a USB drive.
As for how to produce charging the laptop battery correctly, here experts are almost unanimous: both those who advise completely discharging the battery and those who suggest keeping the power source constantly charged are equally mistaken.
The optimal battery charge level is 40-80%. Maintaining the charge level within these limits can increase the service life of the element by 3-4 times, up to 1200-1500 full discharge-charge cycles.
There are no problems with tracking the lower charge limit; all you need to do is set up the appropriate notifications. But how to catch the moment when the laptop is 80% charged? After all, even special software that limits the charge level will be useless if charging takes place in the off state (and this is exactly how it usually happens).
There is no clear answer to this question. Some recommend using timers, for example, in mobile phone, in order to record the battery charging time and use these values in the future. Agree, this is also not the most convenient way.
In any case, it should be taken into account that the charge level and (in particular) the remaining time until the battery is discharged, which the computer “shows” to us, may differ from reality. To clarify the picture, an operation called “ battery calibration».
To calibrate, it is enough to continuously work on the laptop from the state of the power source " fully charged"to the state of "complete zero" (although it is better to stop at 2-3% and complete the work as usual). A full charge-discharge cycle every couple of months will not cause much harm to the battery.
This point must be taken into account when starting to work with the device. To charge new laptop Place it correctly without turning it on, charge overnight. After this, when you turn on the device, 100% of the charge on the screen will be guaranteed to correspond to 100% in the energy storage.
You can also use special calibration programs that, without human intervention, “drive” the computer for a couple of hours and perform a calibration.

Does this advice make any sense at all? After all, the optimal charge limits (40-80%) leave the user with less than half the possible operating time of the device, that is, depending on the tasks performed, 1.5-2.5 hours. Is there any point in mobile computer, which is capable of being mobile for a couple of hours at best?