If everything went well, the device's performance is improved - congratulations on the end of the work!
Here are some tips for using a laptop battery to prolong battery life.
At one time, laptops gained immense popularity due to the ability to operate on a rechargeable battery, which made it possible not to be chained to one place and to do the necessary work almost everywhere. The first models could not last very long without a charge, and the nickel-metal hydride batteries used had a lot of disadvantages. But manufacturers did not sit idly by, and over several decades, battery manufacturing technologies have undergone dramatic changes. The vast majority of notebook computers today use lithium-ion batteries. They can last for quite a long time and are devoid of many of the shortcomings of their predecessors.
But nevertheless, they are not perfect and over time they can also become unusable. A battery malfunction is expressed in the fact that it is discharged very quickly, or the laptop does not correctly display the charge level. In this case, manufacturers and sellers of equipment recommend purchasing a new battery. But, since the cost of the original component is quite high, you can try to correct its work yourself. Depending on the degree of damage, either the battery cells need to be replaced, or it will be sufficient to reset the laptop battery controller.
It is about the last opportunity that we want to tell in more detail in today's article. You will be able to find out in what cases you need to reset the controller, and we will also tell you about possible ways how you can do this yourself at home.
The first thing to do is figure out what the battery controller is.This is a small microcircuit built into the battery itself, which controls its operating condition, as well as the process of charging and discharging. It interacts with the power controller on the motherboard of the laptop itself, and also transfers the necessary system information to the operating system. We hope you understand the diagram. We tried to describe everything in simple terms, but if you want to know the technical details, search the Internet.
When this small IC stops working correctly, it may be necessary to reset the controller. This procedure is popularly known as battery calibration. By and large, there are only two situations when this may be required: incorrect display of the charge and replacement of battery cells.
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An incorrect display of the charge means a situation when the operating system of the laptop, even after a long charge, shows that the charge level is less than 100%, or the charge drops sharply and the laptop turns off not after a few hours, as it should, but much faster. Many people begin to think that the battery has become unusable, but this is not always the case. The problem very often lies in its controller, which simply incorrectly displays the charge.
By replacing battery cells, we mean that in some workshops and service centers they can offer the so-called repacking of the battery, that is, replace the worn-out internal blocks. After that, it is necessary to reset the controller so that all new elements are recognized and can be used correctly. Although, if after replacing the blocks something does not work correctly, you have every right to make a claim and demand correction of defects.
Laptop battery replacement
Now let's take a look at how to reset a laptop battery controller. Let's touch on the software and manual methods.
On some sites you may see a recommendation to use the Battery EEPROM Works program. It is indeed a very powerful and advanced utility that can literally revive the battery in some cases. But there is one big BUT! To use it, you need to know a lot and be able to understand wiring diagrams, as well as have the necessary adapters, which are not always easy to get on the free market. We will not recommend this program to you for use in home devices, as it is very easy to irrevocably damage your battery. What, then, will suit you?
Battery EEPROM Works window
Almost every manufacturer has built-in power management utilities. It can be downloaded from the support site, from the download page of your device's drivers, and in some cases the utility can be either pre-installed or recorded on the included driver disc. Select the reset or calibration function and follow the instructions on the screen exactly. Most often, the utility discharges the battery to zero, and then charges to 100%. The controller will remember the extreme indicators of the charge level and will work as it did immediately upon purchase.
If for some reason you cannot find or install the power management utility, you can manually reset or calibrate the battery. How?
Unplug the laptop from the electrical outlet, then put it into BIOS mode. More details can be found in the article on how to start BIOS mode.
Leave the laptop and do not touch it until it is completely discharged. Take care not to overheat.
Without turning on the laptop, put it on charge. Wait until it is fully charged, for this you can leave it overnight.
In 99% of cases, these simple steps will help bring the battery back to life. Well, if this does not help, buy a new battery, or connect the laptop directly to the outlet, while removing the battery.
If you only use your laptop at home, it may be best to remove the battery for less wear and tear on the battery. But before that, charge it to about 80%, and also check the charge level from time to time, as it is prone to self-discharge.After removing, connect the laptop to the power supply and use it as a stationary computer. This option is suitable for those who have a laptop in only one place, since with this use you can lose data if you disconnect the laptop from the power source during operation.
To increase the operating time for your device, set the appropriate parameters in the power plan settings. Use the power saving mode if necessary.
Friends, today we talked about how to reset the laptop charge controller. We learned that sometimes the problem is not only with the hardware of the computer, but also with the software. Therefore, there is no need to rush to order a new battery right away. We hope that everything worked out for you, and there are no questions left. Do not forget to share your opinion in the comments.
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In this thread, we will look at the disassembly and repair of an interesting battery, allegedly assembled in Korea, from a laptop or Samsung netbook, battery brand AA-PB4NC6B. All the same goals will be followed as in other reviews. Namely, the possibility of repair, is it possible to use these batteries if the unit does not work on a laptop, for crafts and other issues. And most importantly, collecting statistics.
And so the characteristics of the battery pack:
Voltage: 11.1V
Suitable for laptop series: Samsung 70A00D / SEG, R70A00E / SEG, R39, R408, R458, M60, NP-P50, NP-P60, NP-R40 Plus, NP-R40, NP-R45, NP-R65, NP-R70, NP-X60, P210, P210, P460, P50, P560, P60, Q210, Q310, R40, R410, R41, R45, R460, R460, R505, R509, R510, R560, R60, R610, R65, R70, R700, R710, X360, X460, X60, X65, NP-R710, P510, P60 Pro, Q320, R503, R507, R508, NP-R700, NP-R503, NP-R507, NP-R508
Compatible P / N: AA-PB2NC3B, AA-PB2NC6B, AA-PB2NC6B / E, AA-PB4NC6B, AA-PB4NC6B / E, AA-PB6NC6B, AA-PL2NC9B, AA-PL2NC9B / E, AA-PB2NC6, PB2NC3B, PB2N PB4NC6B, PB4NC6B / E, PB6NC6B, PL2NC9B, PL2NC9B / E, PB2NC6
Cell type: Li-ion (LiCoO2), size: 18650
Item Manufacturer: Samsung Marking ICR18650-20F
Typical capacity: 2000 mAh (real)
Rated voltage: 3.75 V
Minimum voltage: 2.75 V
Maximum voltage: 4.2 V
Maximum charge current: 2A
Maximum discharge current: 4A
Country of manufacture - Korea
Country of origin CHINA!
Model Name: ICR18650-20F
These Batteries are all dry, which means that the laptop controller is working with them on the side-altar, and does not really notice their overheating.
There is not a drop or even a hint of electrolyte in the central batteries, which you can see in the following videos.
Now you and I know that in addition to the destruction of copper, boiling off and the release of electrolyte from the battery can also serve as an unpleasant fact.
Statistics are updated and this is the main thing.
Well, a small review is attached:
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Many users of computer technology ask one question: how to repair a laptop battery with your own hands? The question is quite justified, since the breakdown of such a component makes the computer device itself useless. Without a battery, it is impossible to turn on a laptop without using a cable, which negatively affects the main task of a laptop - mobility. In a service center, such work will cost a lot, and buying a new item will be even more expensive. Today we will look at the most popular instructions and deal with the existing causes of breakdowns and incorrect operation.
During operation, the battery of the device loses its original capacity of energy, which directly affects the duration of the device in autonomous mode. If your laptop only works for an hour after being fully charged, or has completely stopped turning on without using a cable, then you should not run to the first store that comes across and buy a new component, since some cases allow you to repair the part yourself at home.
How to get your laptop battery repaired and where should you start? Let's pay a little attention to diagnostics.
If the battery begins to discharge very quickly, then you should first calibrate this component. The most convenient and reliable way is to use third-party software from any of the manufacturers:
If you are the proud owner of a laptop from the manufacturer Lenovo, then there is the Energy Management utility for you.
For Acer owners - Care Center.
Important! Detailed information about the program can be found on the Internet, indicating the model of your device.
The bottom line is that you just need to run the utility through the functional mode, in which your battery is completely discharged and charged again.
Important! Remember that during calibration it is not recommended to unplug the power supply and power out, or use the laptop for your own purposes.
The process itself takes about three to four hours. Some problems can be rectified by this calibration, and the battery will return to its original performance immediately. If these procedures did not bring you the desired result, then we recommend that you familiarize yourself with other methods.
How do I fix a laptop battery? You can try to interfere with the design of the device if the calibration failed to give you the desired result. First, you need to prepare a little and get the following tools:
Special breadboard knife.
Measuring device. An ordinary "TSESHKA" or any other multimeter is perfect for such tasks.
Soldering iron with power parameters no more than forty watts.
Several bulbs for a car with power parameters of 21 watts.
Special technical cyanoacrylate adhesive.
As you may have noticed, batteries for all laptop models are not intended for disassembly, so you will need to resort to using a dummy knife or other sharp object in order to pry and open the case. Next, you need to follow the following algorithm:
Find a seam on the surface of the battery and carefully cut it. Be careful not to damage the internal components in these steps.
Next, determine what type of battery your battery belongs to, as this information will greatly affect the course of work:
In new models, lithium-ion batteries (Li-ion) are most often installed.
If your device is older than three years, then there may be a nickel-metal hydride (NiMH) battery inside.
The following steps depend on the type of battery installed.
How to fix a Ni-MH laptop battery? The following detailed instructions will help you:
Determine the exact number of power components inside the device case.
Multiply this number by a factor of - 1.2 to select the nominal battery voltage.
Use a soldering iron to solder car bulbs to the battery terminals that are connected in series.
Use a multimeter, setting the measurement limit to twenty volts. Check the voltage values on the lamps. If the parameter values correspond to the nominal, then you can proceed to the next paragraph of the instructions. If the values are less than the nominal, then it is best to set the limit on the measuring device to 2 Volts and check the voltage values on all individual elements.
Important! It is best to make marks with a marker on those elements, the voltage on which is less than 1.1 Volts. If you find such elements, then they will need to be replaced in the future.
Take a few more bulbs and attach them to each element. Solder the wires and leave the entire structure for 12 hours to fully discharge the battery.
Now use the laptop power supply and one lamp that is connected in series to the battery cells.Set the voltages for each component to 1.1 volts, then fully charge the battery.
Discharge and charge the part two more times.
Now glue the case and check if the job was done correctly by connecting the power device to your laptop.
Important! If you did not manage to achieve the desired result, then you will have to resort to replacing all the elements at once.
Can I get a different laptop battery repaired? Let's take a closer look at the answer to this question.
Important! Working with such batteries is dangerous, so use extreme caution when handling such parts. Make sure the battery is completely discharged before starting work.
To recover, you need to do the following:
Determine the exact number of batteries and multiply the resulting number by a factor of 3.7. The resulting value is nominal.
Connect the bulbs to the outermost terminals of the elements that are connected in series. To connect, you will need to use a soldering iron.
Note the voltage level. If this value corresponds to the nominal, then you can immediately go to the fifth paragraph of the instructions.
If the values are less than the nominal, then unsolder the controller and all contacting elements, using a measuring device, check the values of each separately. If the measured number is less than the nominal, then leave a mark with a marker for subsequent replacement.
Discharge all cells with car bulbs to 3.2 Volts.
Collect the battery and charge it fully.
If all actions were performed correctly, then the laptop should work without a cable.
Important! Let's not lose sight of another problem when the power supply elements have not been used for a very long time. If you have not used the battery for a long time, then the threshold voltage level on it will decrease, at which the protective controller is activated. In this case, the component will not be charged, and at its terminals the output voltage corresponds to zero.
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Now you know how to fix a laptop battery yourself without going to a service center. Improve your knowledge and gain new useful experience in working with electronic devices!
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 programming one battery you will not recoup the cost of the programmer and the program.
To 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.
By inserting a plastic card (a pick or a plastic spatula) between the halves of the body, 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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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:
The emergence of NiMH is due to an attempt to overcome the disadvantages of nickel-cadmium batteries.
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
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 aforementioned 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 cells 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 also charged and discharged 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:
2. The battery does not hold at all. Again, there are two options:
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:
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.
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.
The question of why the laptop battery is not charging, over time, begins to worry all laptop users. Battery repair, in the absence of specialized knowledge, is quite difficult.
The term "correct use" refers to several factors of correct use, regardless of the total capacity, for example:
When using a new battery, obligatory "training" 5-6 cycles of full discharge-charge. Discharging must be done in an enhanced mode, by loading the CPU and hard disk, setting the maximum display brightness, and also turning on the Wifi and Bluetooth wireless modules.If the battery is not used for a long time, it is recommended to fully charge it, then store it in a sufficiently warm place (optimal temperature from +15 to +35 Celsius), periodically (every few months) connect to a laptop and recharge.
Do not allow the battery to be completely discharged, since modern types of Li-ION tend to reduce their capacity at an absolute discharge, the threshold of which is not lower than 13%.
Do not drop on a hard surface, physical damage will reduce the battery's longevity. This also applies to the surface on which the laptop is placed, it should not vibrate.
Exclusion of moisture and other conductors from getting into the battery, in order to avoid short circuits.
It is recommended to make at least one full discharge-charge cycle every 2-3 months, this is the case when the computer is regularly operated from the network.
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Let's try to figure out how to recover a laptop battery. There are several ways to recover and repair a dead laptop battery. Since the price of this part is quite high, it is not always possible to buy a new battery.
You can do several full discharge-charge cycles, and if the capacity is not very much lost, the laptop battery controller will charge those uncharged sectors that were inactive when using the laptop from the mains. This is due to the fact that during regular non-autonomous operation of the computer, with the battery connected, the user observes a charge level of about 90-97% on the screen, and at this time charging does not occur. In fact, the battery controller, for safe charging, at certain times lowers the threshold for the permissible capacity of each battery sector, since it considers these areas to be faulty. This is the main factor due to which there is no possibility of a full charge through a conventional power supply in those batteries that have lost their voltage in the process of deep discharge.
The only way to restore such batteries is to charge them through special "combines", for example, iMax B6.
Video (click to play).
It is recommended to immediately carry out several full discharge-charge cycles in Windows OS through the "native" charging devices. After such repairs, the battery returns to its original state and keeps the charge level close to that of a new battery.
