How to disassemble a laptop battery. How to disassemble an Asus laptop battery: repair without disastrous consequences. What does the manufacturer take into account?

The design of batteries for Asus laptops is unlikely to interest anyone except inquisitive children. However, the idea of ​​​​seeing what is inside the battery occurs to even the most incurious adults when the laptop suddenly turns off and the battery itself barely holds a charge. The desire to repair the battery yourself is especially aggravated when calibrating and removing extraneous background programs did not produce results. Of course, you can immediately buy a new battery, but you don’t always have the money for that. For those who are familiar with electrical engineering, there is one interesting and budget option: try to disassemble and restore its capacity by replacing faulty batteries.

There are two signs that it is time to restore the battery:

1. The battery capacity lasts only 5-15 minutes battery life, although previously it was at least 2-3 hours.
2. The battery completely stopped holding a charge and as soon as the laptop is disconnected from the network, it turns off completely.

Does your situation exactly match yours? This means that the problem is really serious and it’s time to solve it. Before you start disassembling an Asus battery, it makes sense to find out how it works - this will significantly increase the chances of a successful repair.

"Stuffing" of the Asus laptop battery

A laptop battery or battery is the main element that distinguishes a laptop from a desktop computer and allows you to use the gadget autonomously. The battery is plastic case, in which from 4 to 12 batteries are located in pairs. They look like AA batteries, only bigger. Another mandatory element of the battery is the controller board, which is responsible for the battery charging algorithm.

In principle, the batteries of all Acer laptops have a similar “structure”, but there are a number of models that differ from the rest - these are laptop batteries, and. They have their own characteristics, which we will talk about in one of the following articles.

Let's start doing magic, or the process of disassembling an Asus battery

To avoid distractions during the process, prepare everything you need before starting the repair:

• a multimeter (tester) with which you will measure the voltage on each battery;
• a knife or flat screwdriver, which is convenient for disconnecting the battery case;
• new batteries. You can buy them both in a radio store and on the Internet. The rated battery capacity is indicated in the user manual for your Asus laptop or on the battery itself;
• tool for soldering batteries;
• car light bulb for discharging elements;
• glue for connecting the plastic parts of the battery.

Now you can start “opening” the battery and replacing the batteries:

1. Completely discharge the battery Asus laptop and take it out.
2. Place the battery on a flat surface. Insert a knife (screwdriver) into the longitudinal seam on the side of the battery, separate the part into two parts. Be careful: the knife blade should not go deeper than 2-3 mm, otherwise the batteries may be damaged.
3. It is better to photograph the location of the batteries - the photo will be useful during the assembly process.
4. “Ring” each element with a multimeter. Normally, the voltage should be between 3.7-4.1 volts. If some “batteries” have a lower voltage, they need to be replaced.
5. Before placing batteries in the circuit, discharge them using a car light bulb. This is necessary so that all “banks” have the same potential and are charged evenly.
6. Connect the batteries in order from ground to positive. The picture taken earlier will help you assemble the chain correctly.
7. Having soldered all the elements, lubricate the body parts along the seams with glue and connect them. Wait until the glue dries, insert the battery into your Asus laptop and put it on full charge.

Have you read the instructions provided and are ready to get down to business? Good luck! If you now understand that this option is not suitable, it’s time to buy a new battery for your Asus laptop. It is advisable to choose the original option for your laptop model, then you will definitely not have problems with charging. However, licensed compatible analogues will also be able to please you with stable operation at a lower price. It's up to you to repair or buy a new battery, but we wish your laptop many years of operation!

3 days of painstaking work, 3 nights without sleep, 3 hours until delivery. The important report is 90% complete. All that remains is to write the conclusions and breathe a sigh of relief. And then... The laptop screen treacherously goes blank. That is OK! Apparently, he couldn’t handle the busy schedule. Oh, no. Well, he was discharged. Recently, the charge was enough for a couple of paragraphs. The laptop is back in business - but where is the report?! So, sir, it’s not in the latest Word documents, it’s not visible on the desktop either, it doesn’t seem to be hidden in folders. I don't want to believe the worst. But the report was still not preserved. No one is immune from such a situation. This would not have happened if the battery was working at full capacity. But these are still flowers. If you sit with your hands folded, it will only get worse. The battery will hold a charge less and less, and more and more problems will appear. What to do? Get to the core and figure out how to disassemble a laptop battery with your own hands!

Battery problems entail a lot of inconvenience, so it’s no wonder that we want to get everything sorted out as quickly as possible. Moreover, preferably independently and without additional costs. We definitely won’t be able to determine the problem by eye, which means we’ll have to go all-in and disassemble the battery. If you fail and you can’t put it back together, don’t be upset. After all, laptop batteries are sold at every step, although there are only a few quality markets among them, so let’s open our cards - here is a reliable and 100% verified store.

The quieter you go, the further you'll get

• First, carefully remove the battery from the laptop. There is no need to rush, because in a hurry you can break things.
• At first glance, it may seem that the battery is glued tightly together. But that's not true. There is a noticeable seam between its two parts. Found it?
• Now we take a stationery knife, although wait, few people have one at home. You can take a flathead screwdriver and slowly disconnect one part of the battery from the other. Ready?
• We carefully examine each element of the battery - maybe something has leaked, burned out or broken. If everything is in order, you need to check the power supply - maybe the battery is wrongly suspected of being faulty. And if we find a faulty part, we will replace it.
• Now is the time to connect the multimeter and check the battery from head to toe. Normally, all its elements should show from 3 to 4 V. Is it in the bag?

How is a car useful for disassembling a laptop battery?

Since we want to disassemble the laptop battery efficiently, we need to “rob” our car for a light bulb and use it to discharge all the battery parts. This will ensure that the battery is charged correctly in the future.

We attach the new parts of the battery with a soldering iron and find ourselves at the finish line.

Let's go back to where we started. Again we have two parts of the battery, only now they need to be connected. It is better to do this with the help of special glue. It's more reliable.

That's all. You were able to not only successfully disassemble the laptop battery with your own hands, but also determine the cause of the malfunction.

Anyone can face this...

Now you know how to disassemble a laptop battery, and if something happens, you can do it without problems. But if repairing the battery is more or less simple, a breakdown of the power supply will force you to tinker. There will be a lot of work there, so it’s better not to even start. In this case, it will be much easier and more reliable to purchase a new one. Charger. You can do this quickly and reliably on the batterion website: a few clicks, and a new charger is already on its way to you. Come in - you won't regret it!

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Only if it is assumed that the controller board is working properly does it make 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 you will need to program the controller, and it is cheaper to do this in a specialized workshop since programming one battery will not recoup the cost of the programmer and 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 decisions. I used the following methods:

• Crunch the battery - twirl it in your hands, twisting it diagonally in one direction, then in the other. This action can help the body halves come apart.
• By inserting a plastic card (pick or plastic spatula) between the body halves, try to push them apart. The main thing is to find a place where you can squeeze the card into the slot, and then walk further and further around the office.
• In the corners of the case, the card may not have enough rigidity and then you can use a flat-head screwdriver, the main thing is to act carefully when separating the halves, because if the screwdriver comes off, you can damage your hand, the controller board or the battery element.

As I already wrote, disassembling a laptop battery is often non-trivial and may require experience and ingenuity. For example, before I started practicing myself, I watched several videos on YouTube with disassembly of various laptop batteries. The more carefully you can disassemble the battery, the easier it will be to put it back together later.

The second step is simpler, but requires care: you need to determine the connection diagram of the battery elements and connection to the controller board. It's best to take a photo of the assembly and draw it electrical diagram connections, indicate the polarity of connecting the elements.
In the case of the Toshiba battery, the circuit for combining elements is designated as 2P3S, that is, two elements in parallel and three such blocks in series.
Next, using a voltmeter, we confirm our circuit. First you need to determine the common point, usually on the controller board it is designated as 0V or GND, relative to it we measure the remaining voltages at the connection points of the assembly to the controller board and record the readings on the diagram. At all points relative to zero, positive voltages should be obtained; if this is not the case, then most likely there was an error in choosing the common wire. And we need to find the point with the lowest potential. Next, we check the consistent voltage increase on each series-connected block of elements. This increase must be positive.

Already on at this stage Based on the voltages on the elements, one can make some assumptions about the state of the elements, for example, a voltage imbalance on blocks of elements.
In the next photo you can see two thermal sensors glued with tape to the elements.


Attention!!! While the controller board is connected to the elements, the elements cannot be charged or discharged from external sources, only voltage can be measured. With your experiments with the controller, you can block it or even disable it.
Attention!!! The controller must be disconnected from the assembly of elements in a strictly defined manner, otherwise it will be blocked. The first thing you need to do is solder the wire (or bus) that has the highest voltage, that is, the positive contact of the battery cell furthest from zero. Then the wire with the maximum voltage from the remaining ones and repeat until the last wire.

Now you can put the controller and circuit away so as not to damage or lose it.
But now you can torture the battery elements in order to better understand what happened to the battery.

What is a battery?

Before you pick up piercing and cutting objects, it is worth finding out what you will have to deal with: a rechargeable battery is a monoblock that includes several individual elements connected in series and parallel.

Over time, battery capacity decreases. This is due to the chemical reactions taking place inside the elements (cans) - that’s where life is in full swing! Even if the battery is not connected to the device, the processes do not stop.

It is for this reason that you should pay attention to the production date of the battery (just like when buying perishable products).

Although in the case of batteries, their service life is measured not in days and weeks, but in years. The battery loses up to 10% of its capacity per year. But everyone's aging individual element does not proceed the same way. It is reasonable to assume that Operation Autopsy is carried out precisely because of these elements.

Why do elements “fly”?

This happens for several reasons:

• Overheating, causing the fuse to trip;
• Accelerated wear of individual elements;
• Error in the controller, which “does not see” some of the cans;

It is enough to have one “black sheep” in a set of cells, and the overall efficiency of the battery drops. But what is their value if the battery is dead?

Well, to what extent he died/not died - an autopsy will show. What if he can still be brought back to life? In a word, away with all the torment and let’s get to work!

“... scalpel... scissors... swab!”

This is a joke, of course. Surgical instruments are not useful, but a mounting knife is just right. Not all batteries are collapsible; more precisely, they are mostly non-removable. Let's consider this case.

Opening

The battery monoblock housing consists of two halves, connected at the factory by hot pressing. You need to cut along the joint. For convenience, you can heat the tip of the blade and it will go like clockwork. The penetration depth should not exceed 1.5-2 mm, so as not to inadvertently damage the elements. Therefore, it is better not to rush.

A little patience, and you will be rewarded - the casket will open like an oyster shell, and “33 heroes” will appear in film, lying in strict order. In fact, there will be fewer elements - from 6 cylindrical cans.

Checking the elements

If the average temperature in the hospital is known, i.e. you know for sure that the battery is dead, now you need to find out the well-being of each patient - the performance of each battery element. For this you will need a multimeter. I won’t explain how to use it: since you have gone to great lengths, then such things should be known to you.

First, you should take measurements bypassing the controller: if the readings are equal to or exceed 3.7 times the number of cans, then the problem is with the controller. By the way, lest you forget: before opening your laptop’s battery, make sure that your power supply is in order. If anything, here's where you can find an adapter for most laptop models.

The controller is responsible for the charging and discharging process, avoiding overloads. If with the elements are in order, and in general, the battery “does not hold”, then the problem is in the controller - it simply “does not see” the elements.

In this case, there is the option of reflashing the controller (if there is no mechanical damage, of course). But this will require special equipment. This operation cannot be carried out at home. But we can be glad that the banks are intact. Below I will tell you what you can do with them.

In cases where the controller is in order, by “ringing” each element separately, good jars are identified, and unusable ones are thrown away.

What if you replace all the banks and restore the battery?

A good idea is to replace the non-working banks with new ones and bring the battery back to life. But! – the indicators of the new elements must be identical. How to achieve this if the old ones have wear and tear? Only with the help of special equipment. Or replace all banks.

Replacing cans is a painstaking procedure that requires qualifications. It is not always possible to solder elements efficiently, and spot welding requires equipment. It is still possible that the controller will need to be re-flashed for new elements.

But now, as promised, I will tell you about useful little things that can be made from used cans.

Practical benefits of opening the battery

Since you have done such work, you need to get practical benefits from it. After all, you didn’t do this for the magazine “I Want to Know Everything”?

Each cell (cell) in a laptop battery is a lithium battery. Their capacity is not enough to “pull” the laptop. But each element individually, even if worn, copes well with low-power equipment. For example:

• Flashlight or lamp for tourism and fishing;
• Autonomous flashlight for the dacha or entrance;
• Bicycle headlight.

And many, many useful “tricks”. You can even organize a competition of ideas for the use of used batteries. All that remains is to choose the jury.

The built-in battery allows the laptop to work autonomously for about 3-4 hours. The battery often serves properly for no more than three to four years, but sometimes problems begin much earlier. A bad battery significantly affects the performance of the laptop. The first sign of a malfunction is an alert from the operating system with a recommendation to replace the battery. The message appears when the battery capacity is already quite reduced and it cannot work fully.

"Composition" of the battery on a laptop

It’s logical to start with the “composition” of the battery on this portable device.

The battery is made up of four to eight chargeable cells placed and soldered in a case. This often leads to the false conclusion that replacing the battery on a laptop is the only way out of the situation when the device malfunctions and does not work properly; functionality can be restored in other ways.

The battery is powered by built-in batteries that are slightly larger than AA batteries, and they differ from AA batteries in capacity. Thanks to such elements it is possible restoration battery by replacing faulty batteries with new ones.

The main element of the battery is a microcircuit or microcontroller. This element is responsible for the operation of the battery, and also displays all the characteristics on the screen (state of charge, battery temperature, and so on).

Possible causes of malfunctions

Today's laptops use lithium-ion and nickel-metal hydride batteries. These types of batteries have replaced nickel-cadmium batteries due to their greater capacity and the absence of the so-called memory effect.
Lithium-ion batteries deteriorate quite often and relatively easily - they do not tolerate extreme heat or cold, and you also need to be careful with charging. If the battery is over-discharged, it may fail. Also, do not charge it for too long - this can also affect its performance. Another reason that can easily ruin a battery is lack of use. If the battery is in the laptop case, but the computer is running on mains power, or if the laptop has simply not been used for a long time, the battery often cannot provide the same performance.

A short circuit can even provoke an explosion. That is why a microcontroller is needed that regulates the operation of all elements and also protects against possible emergency situations.

However, if the battery holds its charge much worse, if previously you could use the computer offline for about 2 hours, but now the battery usage time barely reaches thirty minutes, and the system displays familiar messages, something should be done.

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Laptop battery repair

1. Calibration Repairs can be carried out by calibration, which is performed by programs from the manufacturer. The purpose of this operation is to eliminate inconsistency in the operation of the microcontroller and the battery power supply. Quite often, the battery capacity instantly drops to 30%, and this method allows you to restore functionality;
2. Recovery. Elements that no longer function are removed and replaced, then soldered into an electrical circuit;
3. It is necessary to reprogram the device with further calibration. In this way you can return the battery to service;
4. Replacement. If calibration and recovery do not work, then you cannot do without replacing the battery.

Algorithm for disassembling the battery on a laptop

1. We completely discharge the battery, and then remove it;
2. Open the battery cover. To do this, you need to know how to disassemble the battery on a laptop. You will need a thin knife blade and a small hammer. Lightly tap the battery case around the edges and insert the knife shallowly into the plastic cover. We do everything carefully so as not to get hurt. We carry out the operation two or three times until the body cracks, then we separate it into two parts. Take your time and remember to be careful. If you overdo it and do not calculate the force, you can damage the case and the batteries inside. Lithium batteries contain elements that are harmful to health. If you insert the blade too deep, you can easily damage the controller and other elements. In this case, there is no need to continue repairs; you can immediately save money for a new battery;
3. The board on the left monitors the battery's actions, this important device with a microcontroller and memory elements that store information about the operation of the device, charge cycles, as well as other battery elements, they are on the right. There is no need to rush to disconnect these particles from the general scheme. First you need to measure the voltage level on each element. On one pair the voltage, for example, can be 1.2 volts, and on the others - 3.3;
4. We select replacement elements and prepare them for installation. Remember the main rule: all elements must have the same capacity and type; it’s great if all the particles are from the same batch. We recommend taking several elements in reserve;

All elements must have the same resistance. They need to be installed only when discharged, approximately 3.6 V.

Products are often sold charged. Then you should use a 5-10 Ohm resistor. We discharge the elements all together, connecting them in parallel (“+” to “+”, “-” to “-”).

Let us immediately note why it is extremely undesirable to install charged elements. If you insert charged cells, the device will attempt to charge the cells. If the charge does not go (and it will not go, because there is nowhere else to go), then the system will perceive the elements as inoperative or continue charging, which can lead to quite serious consequences - failure of the laptop or even a fire.

1. If the preparation is complete, you can begin installing new elements;

We carry out the replacement in the following order: first we remove unnecessary elements (you need to start from the largest “+” to the smallest). New elements are placed in reverse order- install the element that is on the right, first “earth”, then “+”, then insert the following particles in turn. Next, you need to check the quality of the work performed and soldering.

1. Now you also need to carefully return the case to the initial state, put the covers back in place, then insert the battery into your laptop. Connect an external power source and charge.

Attention! Do not leave the device unattended when charging for the first time. Monitor the temperature of the charging battery to prevent overheating. If you notice any problems, immediately turn off the power and remove the battery from the computer.

After completing the charging procedure, we check the functionality of the battery. Battery life should increase significantly - by an average of an hour and a half.

If everything went well, the performance of the device is increased - congratulations on completing the work!

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Let's note a few tips for using the battery on a laptop in order to extend its performance.

1. If the laptop often runs on an external power source, it is better to remove the battery and store it separately in a cool place. But don’t forget to “drive” the battery. At least several times a month it is necessary to completely discharge and charge the battery. Otherwise, don’t be surprised if it refuses to work after a break in use;
2. The display consumes a lot of power, so if you want to increase the battery life of the laptop, reduce the brightness to optimal;
3. Wireless networks also have a big impact on battery life. It is advisable to turn off Wi-Fi when not in use. If possible, use wired channels;
4. We recommend using operating schemes for laptops to save energy. OS already include designed circuits to save power. This will also help increase battery life.