DIY hp battery repair

Only if it is assumed that the controller board is in good working order, it makes sense to repair the laptop battery with your own hands. If the controller is not working properly or is already blocked, then to repair such a battery, programming the controller will be required, and this is cheaper to do in a specialized workshop, since by programming one battery you will not recoup the cost of the programmer and the program.
It is clear that you first need to remove the battery from the laptop. Next, you need to divide the plastic case into two halves and carefully remove the battery of elements with the controller board. For me, this stage was the most difficult and required non-trivial solutions. I have used the following methods:

• Crackle the battery - twist it in your hands, twisting it diagonally in one direction, then in the other. This action can help to unstick the halves of the case.
• Inserting a plastic card (a pick or a plastic spatula) between the halves of the case, try to push them apart. The main thing is to find a place where you can squeeze the card into the slot, and then go further and further through the office.
• In the corners of the case, the rigidity of the card may not be enough and then you can use a flat screwdriver, the main thing is to act carefully when dividing the halves, because if the screwdriver comes off, you can damage your hand, controller board or battery element.

How to disassemble a laptop battery: 2 comments

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Should you collect in reverse order?

In this topic, lay out the software necessary for repairing the battery, information that you need to know during repair, typical malfunctions and other necessary information, do not ask questions in this topic.

Laptop battery. Accumulator battery (other names: battery, battery) - this is one of the main devices that distinguish a laptop from a desktop machine, although this does not affect the operation of the laptop as such, but still everyone wants to have a working battery, at least for the sake of not turning off the laptop go from room to kitchen.

Let's see what kind of batteries are in principle:
 NICKEL-CADMIUM BATTERY - (or abbreviated NiCd) nickel-cadmium;
 NICKEL METAL-HYDRIDE BATTERY - (or abbreviated NiMH) nickel-metal hydride;
 LITHIUM ION BATTERY - (or Li-ion for short) lithium-ion batteries.
The latter are the most common and are considered to be the best batteries. Is it so?

The emergence of NiMH is due to an attempt to overcome the disadvantages of nickel-cadmium batteries.
Eventually:
 30 - 50% higher capacity compared to standard NiCd batteries;
 less prone to memory effect than NiCd. Periodic recovery cycles should be performed less frequently;
 less toxicity. NiMH technology is considered environmentally friendly.

Another type of popular battery is Lithium Polymer. The difference from Li-ion lies in the name itself and lies in the type of electrolyte used, it is assumed that a dry solid polymer electrolyte is used, however, today technologies do not allow such an element to be made, therefore, a gel is used
hot electrolyte, and as a result we get some kind of hybrid. Such batteries do not belong to either pure li-ion or Li-pol, and it would be more correct to call them lithium-ion polymer, but manufacturers call them lithium polymer to promote batteries. As for the pros and cons of li-pol, they are exactly the same as those of li-ion, so further we will consider li-ion, because they are the most common today.

The aforementioned danger of overcharging means the following: overcharging can lead to an increase in cell pressure and leakage. Therefore, the safe operation of batteries is always ensured by an external electronic protection system against overcharging and overdischarging of individual batteries. It includes controllers that measure the voltage of each battery or block of parallel-connected batteries, and a switch for opening the electrical circuit when the voltage limits are reached. Thermistors are used to monitor the temperature of the battery.

Another disadvantage of Li-ion batteries is the fear of a strong discharge (overdischarge). The above-mentioned protection circuit is powered directly from the batteries, and therefore if the cells are completely discharged, the circuit stops working and the cells are not charged, in addition, a deep discharge negatively affects the internal structure of the cells themselves. It is believed that the optimal range for the operation of li-ion cells is 20-100% of the charge, the output below 20% leads to faster aging of the cells.

The service life of Li-ion cells is calculated not only in years of service, but also in charge-discharge cycles, as a rule, until the capacity is reduced by 20%, they provide 500 - 1000 cycles. The further behavior of the elements is rather difficult to predict due to the large number of elements in the battery, most often there is a gradual decrease in capacity, sometimes abruptly, so the protection system keeps track of the number of cycles. On older models of batteries, when a certain cycle value was reached, the protection system closed the battery, and it was not possible to use it. The ability to close the battery when a certain number of cycles is reached remains today, just the number of cycles prescribed in the battery is large enough, and the aging of the elements, and therefore the drop in capacity, occurs earlier. As a rule, the counter value can be reset to zero, but do not forget that using such a battery is somewhat unsafe, the cells in the battery age unevenly, which means that they are charged and discharged also unevenly.

There is another difficulty associated with the counter, what is to be counted as a charge-discharge cycle? Full discharge and full charge? But it is not recommended to completely discharge it. And whether to read a short-term disconnection from the network in a loop? Most modern batteries do not charge if the current charge is more than 90-95%, this avoids unnecessarily high rates of charge-discharge cycles. The figure 90% -95% is relative - on some laptops it can be edited with special utilities.

As for the storage conditions, there is no unambiguous information on this issue, the most common is the opinion that it is necessary to store at a charge of 40% periodically (once every two to three months) recharging to this value.

In general, Li-ion batteries perform best at room temperature. Operation at elevated temperatures dramatically shortens their lifespan.

At low temperatures, battery performance decreases. A temperature of minus 20 ° C is the limit at which Li-ion batteries cease to function.

Battery repair is required in two cases:
1. The battery holds little. She kept the new one for an hour or two or three, and now it is 5-15 minutes. Conclusion - bad elements. Solutions to the problem:
a) buy a new battery.
b) buy new elements and revive the battery yourself.

2. The battery does not hold at all. Again, there are two options:
a) buy a new battery
b) buy new elements and revive the battery yourself.

As you can see, there are few problems, and there are also few solutions.

Option b) New elements are definitely needed. 4-6-8-9-12 cell battery - accordingly 4-6-8-9-12 new cells are needed. Just replacing a dead group won't help. Why? The old elements have one capacity, the new one will have a different one. Accordingly, a disbalance will appear on the groups of elements, and the electronics will simply turn off this battery.

Means:
1. We need ALL new items. It is recommended to set the capacity of the elements not less than the nominal one. Those. you had 1800mAh cells - you can put 1800, 2000, 2100, 2200 mAh. There were 2000s - put 2000, 2100, 2200. If, of course, the difference in price is small. If this criterion is important (prices) - then take the elements of the native denomination.
2. We open the battery.
3. The elements must be welded in the same way as the relatives are welded. Look for people who have the right equipment. You can't just solder. Some people say “not recommended”, but believe me - it is NOT.

4. It is necessary to disconnect the elements from the electronics from the greater plus to the smallest. This can be determined visually in most cases. If it doesn't work, arm yourself with a tester.

5. Before welding the elements, connect them all together at night: all the pluses to the pluses, the minuses to the minuses. This is necessary to equalize the potency on the banks.

6. The battery is opened, new elements are purchased, welded like the old ones, the old ones are removed. In theory, all that remains is to solder the new elements to the electronics, and hurray. No, no hurray. It's all about the same electronics. She remembers everything about your old elements - the number of cycles performed, the capacity of the elements, etc. If your battery had a capacity of 4000mAh, and after a year or two or three of its operation its capacity became 200mAh, then even if you substitute new elements into the battery, the electronics "will not believe". The conviction of electronics that it has new elements is called flashing (reset, zeroing) the firmware. What tools are used to do this, see the heading "HARD - hardware that is needed to repair laptop batteries"

7. Now you need to determine which bundle you will be dealing with. The term "bundle" appeared due to the fact that, as a rule, a pair of microcircuits is used on electronics: a control controller and a memory in which various useful data are recorded. There are batteries that have only memory on the electronics, or only a controller. But out of habit, we will continue to call them "bundle". Look carefully at the electronics board. The controller is usually the largest microcircuit on the board. Memory, as a rule, is an 8-pin microcircuit, such as the 24C64,24C32 series and the like.

8. The bundle was identified. Now the question is what and where to change in order to reset the firmware. Some controller manufacturers do not hide this information, and describe everything in detail in datasheets. After reading and understanding the datasheet for your controller, you will know what and what needs to be changed. In some cases, battery manufacturers hide information, and it is extracted bit by bit. But then it is embodied in programs that can be used for repairs.
9. We connect the elements to the electronics from “ground” to “plus”. Those. first "earth", then "plus" of the first element, then the second, and so on. - until the very last.

11. So, if the goal is achieved: the laptop runs on battery for the prescribed hour or two or three (like new), the charge and discharge curve is uniform - then we can be proud of ourselves and consider that we have achieved success.

Read SMbus data via laptop battery connector.
Saving SMbus data to a text file.
Saving data in its own BQD format (BQ208X data file), for further use in cloning bq208X microcircuits.
Reads and writes all memory chips used in laptop batteries.
Reading and writing data from flash memory and EEPROM in microcircuits with integrated memory such as: BQ2083, BQ2084, BQ2085, PS401, PS402, BQ20Z70, BQ20Z80, BQ20Z90.
Saving data from flash memory and EEPROM in BIN format.
Resetting (zeroing) the microcircuit parameters to the initial (factory) parameters in one click of the mouse.
Clone password protected ICs with integrated flash memory (bq208X) to new or non-password protected ICs.

Available after registration

In fact, recovering a laptop battery is not a difficult process if you have experience with power tools, as well as knowledge of the battery operation process and the tools to complete the task. By following some simple tips, laptop users can quickly do their own laptop battery repairs while saving $ 100 on buying a new one.

Laptop batteries are made up of rechargeable batteries and a circuit board.A typical 6 cell laptop battery has several hundred charge cycles, when they are depleted, the cells can no longer hold a charge. And the easiest way is to replace them.

Battery cells can be purchased for a fraction of the cost of a new battery. However, experience with electronics is required to avoid the risk of electrical shock, as this type of battery can explode. It is imperative to take all necessary precautions to ensure the safety of the repair.

Before disassembling, make sure the laptop battery is completely discharged. Once the charge is completely depleted, you need to double check your laptop before removing the battery. It is important!

Do-it-yourself Asus laptop battery repair procedure:

1. Open the battery case. To do this, carefully unpack it using a flat screwdriver and a utility knife. Once the battery case is open, you can analyze the type of batteries required and learn the wiring diagram for installing them. Before disassembling, it is better to take a picture or draw a connection diagram of the elements, so as not to forget before restoring. It is also important when opening to take all measures to prevent deformation or breakage of the plastic case of the battery.
2. Replacing cells. Use a voltmeter to make sure old cells are fully discharged before removing them. This will prevent possible electrical shock.
3. Use the model number on the battery to find the correct replacement cells.
4. Solder the new cells to the wires, making sure they connect to the correct wires.
5. Protective goggles are used when replacing lithium-ion cells. They are handled with care as they explode.
6. Once the battery case is closed and placed back in the laptop, it needs to be fully charged.

Laptop batteries are made up of lithium cells called 18650 cells. They do not last forever and have a lifespan of about 2 years. If the laptop is fully charged but doesn’t even charge for half an hour, the cells inside the battery are dead.

With your old laptop battery in stock, some wires and tools like a wire cutter and electrical tape, you can start rebuilding your laptop battery yourself:

• Open the old battery and take out 6 cells, which are in parallel connection 2 x 2.
• Check the voltage with a multimeter of your own battery. Typically, a battery voltage less than 3.6 volts indicates that they need urgent replacement.
• Using one wire, connect all cells in series. The circuit should provide about 12 volts.
• Open the original block, remove the faulty cells and, keeping the circuit, replace them with working cells.
• Collect the circuit on your own battery. The battery pack will also have 4 wires - 1 negative and 3 positive (one attaches to the end and two between the battery pack).
• Check the circuit with a multimeter before closing the unit.
• Close the battery case, insert into PC and start charging.

This apparatus is designed to last about 2 years under normal circumstances, but its lifespan is often much shorter. Before attempting to repair a laptop yourself, consider how dangerous it is.

Lithium-ion batteries, in particular, are highly flammable and can cause an explosion, and not all types of batteries can be repaired.

These tips apply mainly to DIY lithium-ion type laptop battery repair. The repair consists of the following stages:

• Cooling down your computer.
• Re-calibrate the battery.
• Awakening the sleeping lithium-ion unit.

If your laptop's battery starts to drain quickly, you can try to cool the computer further.

Many laptop batteries today are equipped with lithium-ion cells, which need to stay cool so that the battery will last longer. If this part shows clear signs of slowing down because it has become too hot, you should immediately turn off your computer and cool it down.

When hot operation is a common occurrence for a PC, then you need to purchase a cooling pad for your computer. It costs 5 times less than a new battery and will not allow the laptop to quickly lose its battery.

If the operating system is confused about battery capacity, it means that it may need to be recalibrated. The main reasons for this problem are:

• the battery is not completely discharged;
• the user keeps the laptop on at all times.

Regardless of these reasons, there are two ways to fix the problem when repairing a laptop battery with your own hands.

The first is to find an online battery calibration program with a tool designed and released by the manufacturer specifically for the laptop model you are looking for. If the required software is not found online, you will have to use the second method and manually recalibrate the battery:

1. Charge the battery to the maximum value it can reach.
2. Let it cool for 2 hours and discharge completely.
3. After the laptop has been completely turned off, do not turn it on for the next 3-5 hours.
4. Turn on the laptop and charge the battery to the full - this time it will be able to reach 100%.

Lithium-ion batteries contain a protective circuit that protects the battery from over-discharge accidents. The transition to sleep mode can occur when the lithium-ion packaging is stored in a discharged state for any period of time when the self-discharge gradually depletes the remaining charge. Depending on the manufacturer, the Li-ion protection circuit is disconnected between 2.2 and 2.9 V, and you need to know how to repair the laptop battery in this case.

Some chargers have a wake-up or “boost” function to re-enable and recharge batteries that have “fallen asleep”. Without this provision, the charger renders them unusable.

Boost applies a small charging current to activate the protection circuit. If the correct cell voltage can be reached, the charger starts normal charging. If storage of lithium-ion batteries presents a clear uncertainty, then manufacturers recommend keeping them in a 40-50% state of charge. But at the same time, they warn about the possible loss of the device due to excessive discharge. There is a wide range of action between these criteria, and if the user is in doubt, it is better to store the battery with a higher charge and in a cool place.

Very often, poor battery performance is not related to structural defects, but is caused by various software malfunctions in the computer, in particular due to damaged drivers.

This malfunction is easy to fix:

1. Remove the battery from the computer and start the PC through the power adapter.
2. Go to the "Batteries" tab in the device manager, after which you can see the "Battery ACPI-compatible controller" drivers on the laptop and you can start restoring the laptop battery with your own hands.
3. Remove the main driver, first select it and then click on advanced options, click on "Uninstall" and "Confirm to remove device" to completely uninstall this driver from the laptop.
4. Turn off the laptop and install the battery in its place, and then start the laptop again. After doing this, the problem will most likely be resolved.
5. If the problem is still not resolved by the above solution, then it is quite possible that the operating system registry has been corrupted by some kind of virus or malware.
6. Then the only way to fix it is by using a best-in-class registry cleaner or BIOS reset.

You can try resetting the System Management Controller (SMC) to correct the problem. Restarting Mac in Recovery Mode:

• Go to the menu in the upper left corner of your Mac screen and click Restart while holding Command and R together to open a window.
• Erase your Mac hard drive and click Continue.
• Select your boot disk and click "Erase" using the buttons at the top of the "Disk Utilities" window.
• Select Mac OS Extended (Log) from the menu and click Erase, then boot your PC as usual.

• Shut down your Mac.
• Disconnect the power cord from the PC.
• Hold the power for 10 seconds and release the button.
• Boot your PC as usual.

Note! It may take slightly longer than usual for the download to start after resetting the SMC.

Based on their experience with battery repair, users share their tips:

1. Some laptop batteries require a constant power supply to protect important data in the device's memory.
2. When replacing cells in these types of batteries, it is necessary to provide a secondary voltage by connecting a 100 ohm resistor to erase the old data. Only when installing new cells can the user remove the resistor, and then start repairing the laptop battery with his own hands.
3. When replacing cells, only rechargeable batteries of the same charge can be used (difference within 10%). Cells with different chemical base, age or capacity cannot be used (i.e., do not use nickel cells if they use lithium cells). Insert lithium cells with the correct polarity as they are sensitive to reverse polarity.
4. When charging / discharging or repairing a lithium battery, a protection circuit must be used.
5. Copper shunts can form inside cells, which can lead to partial or total electrical short circuits. When recharged, such a cell may become unstable, causing excessive heat or other abnormalities, including exploding.

Knowing these secrets of quality laptop batteries can save consumers hassle and money when doing DIY laptop battery repairs.

Choosing the right battery manufacturer is important. There are many laptop manufacturers that advertise extremely low prices for laptop replacement laptops over the internet, Amazon and Ebay. Many of these low-priced companies are based overseas and do not comply with safety and manufacturing standards to ensure lower costs. When a consumer is evaluating potential suppliers for replacement, it should be possible to contact a representative of the manufacturer of the product rather than the seller. This information is carefully hidden from consumers through various tricks, for example, providing him with only an email address.

You shouldn't pay extra for branding and labeling on laptops before doing your own laptop battery repair. Even the leading brands of laptop batteries are manufactured using components from third parties. In truth, most branded laptop parts are manufactured using various components from other companies.

Laptop batteries determine battery performance. They have three main components:

1. Rechargeable batteries.
2. Printed circuit board.
3. Battery housing.

The quality and safety characteristics in each of these parts will determine the overall quality, life and performance of the battery to be replaced. Laptop batteries are the most expensive component in batteries. The cells are categorized by grade and fall into categories A, B or C.A class A battery from a well-known manufacturer (such as Samsung or LG) tends to last longer and has better performance than a class B battery.

Battery Life Expectancy. High quality components lead to longer loads. The life expectancy for any laptop battery may vary based on usage. In general, a laptop battery will provide 400 to 800 life cycles, depending on the usage and quality of the battery. Poor quality or poorly manufactured batteries provide fewer cycles and a shorter overall life:

• Top quality batteries (Class A cells) - 12-18 months.
• Medium quality batteries (class B cells) - 10-15 months.
• Poor quality batteries (class C cells) - 5-10 months.

Laptop warranty coverage. Since most batteries fail within the first few months, it is important that the purchaser is covered by a warranty for at least one year after purchase. Therefore, he should always check the documents for the battery.

Over time, the laptop battery loses its original capacity, which affects the battery life of the device. If your laptop operates on a full charge for about an hour or stops turning on at all without a connected power adapter, do not rush to purchase a new battery, in some cases it is possible to restore the laptop battery yourself.

If your battery starts to drain too quickly, try calibrating it first. The most reliable way is to use a special utility, which is called differently depending on the manufacturer. For example, for Lenovo laptops it is Energy Management, for Aser it is Aser Care Center. The point is that it is necessary to start a mode through the utility, which first completely discharges the battery, and then fully charges it. During calibration, do not unplug the power adapter, cut off the power supply, or use a laptop. The process can take from 2 to 10 hours. In some cases, calibration can help restore the former autonomy of the device.

If the calibration does not give the desired results or, as described earlier, the laptop does not operate on battery power until the power adapter is connected, it is time to start repairing the battery.

• breadboard knife;
• multimeter;
• a soldering iron with a power not exceeding 40 W;
• several car bulbs with a power of 21 W;
• cyanoacrylate glue.

Since laptop batteries are made non-separable, you will have to use a breadboard knife or other sharp object to open its case. Find the seam on the battery and cut it carefully. Do this carefully so as not to damage the internal components.

Before proceeding with the further steps, be sure to determine the type of your battery, as this will affect the recovery process. If the laptop is new, then most likely you have a lithium-ion (Li-ion) battery, and if the laptop is older than 3-4 years, then you probably have a nickel metal hydride (NiMH) battery.

If the described method does not bring results, you will have to change all the batteries at once. Sanyo's 2,100 mAh NiMH batteries are perfect. When replacing, do not use a soldering iron to chain the batteries. Instead, make contact holders and solder the connecting wires to them.

These batteries are dangerous, so use extreme caution when repairing. Make sure the battery is completely discharged before starting.

1. determine the nominal battery voltage by counting the number of batteries and multiplying the resulting value by 3.7;
2. solder the bulbs to the extreme outputs of the series-connected elements;
3. check the voltage - if it corresponds to the nominal, then go to the fifth point (note, if the laptop does not work on battery power, the controller is most likely out of order);
4. if the voltage is less than the nominal, it is necessary first of all to unsolder the controller, and then all the elements from each other and check the voltage of each separately, while all elements with a voltage significantly less than 3.7 V should be replaced with new ones;
5. use a light bulb to discharge all batteries to 3.2 V;
6. then glue the battery case, insert it into the laptop and carry out the full charge process.

Another problem that occurs with lithium-ion and lithium-polymer batteries, if they have not been used for a long time, is the voltage drop to a level below the threshold at which the safety controller is triggered. In this case, the battery is not charged, and the voltage on its contacts is zero. To solve the problem, it is necessary to connect the laptop power supply to the serial chain of battery cells through a 5 W light bulb and charge the battery to a voltage of 3.4 V per cell.

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Many PC users may sooner or later face a situation when, when connecting [. ]

A properly functioning rechargeable battery gives meaning to the existence of a laptop, since in its absence the device [. ]

Modern laptops can work for several hours without recharging, it all depends on the manufacturer and the specific model. Over time, this figure decreases, and many users are thinking about a complete battery replacement. Is it possible to restore a laptop battery on your own, and how does it happen? Let's figure it out in more detail!

The cheapest option is to replace individual components.

All accumulators are made of several cells soldered together and set in a case. The reason for the deterioration in the quality of the battery can be the breakdown of one of these components, so you cannot immediately run to the store and throw money away for a new battery. Experienced experts say that a worn out battery can be brought back to life.

There can be a maximum of 8 components in the battery case, they all resemble the batteries we are used to (those that are used in the TV remote control, for example). The work of all these parts is controlled by a special microcontroller. The circuit is designed so that the user can view information about the battery temperature and charge level on the device screen. It is impossible to do without reprogramming the said microcircuit during the battery repair process. Such a condition is mandatory, the procedure requires certain knowledge, so not everyone can do it with their own hands.

Laptop battery repair can be done by calibration. The task comes down to returning the original capacity of the product; we are talking about adjusting the operation of the power components, microcircuit and control unit. There are times when the battery loses its capacity very quickly, instantly dropping the mark from 100 to 30 percent. The reason for this behavior is the inconsistency of the internal components.

Calibration is most conveniently performed using special programs. One of these is the BatteryCare utility. Among the main advantages of this tool are the following:

• simple interface;
• automatic update;
• switching settings in automatic order;
• the presence of useful tips;
• does not affect system performance;
• convenient monitoring of the battery condition.

BatteryCare has a number of functionalities.For example, you can find out how much the device's capacity has decreased in comparison with the information declared by the manufacturer. Laptop battery recovery software displays the number of charge cycles, voltage, calibration date, temperature and more. She herself will tell you about the need for calibration and give useful recommendations for performing this procedure. The remaining life cycle calculation is calculated based on statistical data.

Using the battery recovery utility, you can also monitor the current temperature of the hard drive and processor.

The calibration process itself consists of three stages. First you need to charge the battery to 100%, then discharge it to zero and recharge it to full capacity. During such manipulations, the battery charge level on the microcircuit will equalize, the controller will now again show the real value.

The second way is to replace the failed components. The batteries that have become unusable are removed from the battery, new ones are installed in their place, after which the whole structure is soldered. After replacement, it is necessary to calibrate and reprogram the chip. Solving the problem with your own hands is quite difficult; it is best to use the services of a specialist.

Replacing components saves money as it costs less than replacing a complete battery. The procedure can be repeated several times, and this is very beneficial. A remanufactured battery performs even better than a new one.

If this does not help, and your laptop is useful at home, you can plug it in and work stationary. In this case, it is recommended to pull out the battery.

Each user, when choosing which laptop to buy, pays attention to the main factor in the duration of its operation - the power and quality of the pre-installed battery.

A powerful battery will keep your computer portable for a long time. Several years after the operation of the laptop, it becomes noticeable that its life in a state of being disconnected from the mains has significantly decreased. Laptops with faulty batteries become unable to work autonomously even for 15-20 minutes. The surest way to fix an old battery problem is to purchase a new one.

The main and most common cause of poor laptop battery performance is wear and tear. However, battery malfunctions can occur not only due to aging. Other causes of battery failure:

1. Incorrect charging method.
2. Incorrect operation.
3. Moisture penetration into the computer, in particular the battery.

It is extremely important for every user of a portable laptop to have comprehensive information about how and how not to charge and connect your device to the mains. Avoid plugging your computer into an electrical outlet all the time. This should not be done if the battery is fully charged. The battery should work cyclically: you need to wait until it is completely discharged and only then connect the power supply. Also, do not interrupt charging in half. Wait for the power supply to fully charge the laptop battery. Remember that improperly charging your laptop battery will significantly reduce battery life and cycle life.

A battery breakdown may occur when the laptop stops charging or is partially charged. In any case, third-party intervention is required. If the warranty period for your device has not yet expired, then it makes sense to contact a specialized service center to obtain professional computer support.

Remember that each battery has a different lifespan and the number of possible full charge cycles.Having exhausted its resource, the computer battery becomes unusable, so you should not try to bring back to life frankly old batteries. It will be much easier and more efficient to purchase a new one. Repair the battery only if it has not yet exhausted its resource, but has been mechanically damaged by the user of the device.

If the device operates from the mains, but does not want to function autonomously, you should check the device software for errors and, if possible, eliminate them as much as possible. Possible solutions to the problem:

Doing repairs yourself should only be done if you are well versed in the battery operation scheme and understand its principle of operation. Doing so could damage important contacts inside the battery and make final repairs more costly.

To begin with, you should consider the principle of operation of the laptop battery. The main and most common types of laptop batteries:

1. Nickel-based metal hydride batteries. Their main feature is that such batteries are advised to be brought to a state of complete discharge, and only then to charge up to one hundred percent. This should be done only for the first third of the battery life. If you do not follow this simple rule, the reserve of such a battery will very quickly be exhausted. You can find out what type of battery your device has by taking out the battery. The view will be indicated on it.
2. Lithium ion. Throughout the entire period of use, this type of battery must be charged and discharged from start to finish. Do not interrupt the charging process or charge the laptop too early.
3. Polymer lithium. Due to their low weight, such batteries can be charged even if they are not fully discharged. The service life of such batteries is longer than that of other types of similar products.

In order to start repairing a damaged battery, you must first take it out and disassemble it. It should look something like this:

In ninety percent of all laptops, the battery cannot be disassembled, so you need to carefully cut the plastic case into two halves using a knife or blade. Care should be taken as there is a possibility that important battery cells could be damaged.

Measure the rated voltage. This can be done by counting the number of battery cells and multiplying the resulting number by 1.2. The resulting number is called the nominal voltage (NN) of the laptop battery. Connect the elements in series at the extreme terminals of the battery and measure everything with a multimeter, if the device shows the HH exactly the same as that obtained by calculations, but the laptop still cannot be turned on, then the malfunction lies in the battery controller. In order to fix the problem, you need to completely discharge all the elements of the laptop and then recharge them a little. Then collect the battery, insert it into the laptop. The malfunction should disappear.

Thus, you can repair all laptop batteries, however, before starting the repair yourself, watch a few videos on the Internet. In which the battery is disassembled of the same type as your computer. If you are experiencing difficulties in repairing, it is better to contact a specialist.

Often laptop users are faced with the fact that in the middle of charging the battery, the process stops. When you hover over the battery icon, a message like this appears: "The power supply is connected, but the laptop battery is not charging." In fact, nothing serious happened and every ordinary user can solve the problem. The cause of the malfunction is the incorrect turning on of the operating system.

The problem is solved as follows: turn off the laptop, disconnect it from the power supply. Remove the battery, then wait 1-2 minutes and insert it back.Start your computer in safe mode, wait until the system is fully loaded. Connect the charger. Thus, the error disappears and the PC starts charging again. This type of malfunction can occur from time to time.