The battery of the screwdriver does not hold a charge

Table of Contents:

Unsuitable operating conditions

Factors associated with improper use include:

  • Connecting a large number of electronic devices. The generator cannot cope with the load, transferring part of it to the battery. The battery then runs out quickly. Sometimes the cause of the malfunction is the incorrect installation of the alarm.
  • Operation at low temperatures. This leads to a decrease in the capacity of the device. When the generator supplies an insufficient charge, the electrolyte crystallizes.

The battery is short

A short circuit of the plates occurs due to improper storage or use of the product. If the battery is kept out of the cold, the electrolyte freezes, damaging metal parts. Excessive loads and high amperage when charging leads to a short circuit.

One of the cans collapses, the battery capacity drops sharply. You cannot immediately connect such a battery to a charger. It is necessary to remove the destroyed plates and rinse the containers. A device with a large number of shorted plates is disposed of due to the impossibility of recovery.

Loss of nominal performance by electrolyte

The problem arises with the intensive evaporation of the electrolyte, the volume of which decreases. The capacity of a battery containing an insufficient amount of acid solution becomes lower than stated in the instructions.

A decrease or increase in the density of the electrolyte negatively affects the state of the battery.

The first occurs with the constant addition of distilled water, the second. when the solution boils. If the battery is serviceable, the problem can be solved by adding acid or water. The density is measured with a hydrometer. The battery can then be charged.

battery, screwdriver, does, hold, charge

Voltage of a charged vehicle battery without load.

Physical deterioration of the battery

Any device has its own service life, after which it becomes unusable.

Older batteries could be re-serviced and the driver only needed to keep an eye on the electrolyte and metal plates.

In modern models, this is not provided. Maintenance-free batteries with a closed case are considered disposable. The battery in the car lasts 3-5 years, it cannot be repaired or restored.

Older batteries can be reanimated by changing the density and amount of electrolyte. However, such manipulations do not solve the problem of equipment failure due to physical wear and tear. They only postpone the coming of this moment. The right decision is to buy a new device.

The graph of the physical wear and tear of a car battery.

Forgetful driver

Full battery discharge occurs when the car is left for a long time with the headlights, car radio, or other devices on. If this happens infrequently, after the discharge-charge cycle, the properties of the battery are restored.

Scheme for automatically starting or turning off car headlights.

Why does the battery run out quickly?

No matter how high-quality the battery is, sooner or later it fails. A new battery can also drastically lose its ability to hold a charge.

The reasons for this breakdown are:

  • malfunction of the generator, which stops charging the battery;
  • incorrect connection of electricity consumers;
  • deterioration of the properties of the electrolyte;
  • operation in extreme conditions.

Electronic systems that are not switched off at night (alarm, radio) are also the reason for the loss of the charging resource.

Generator does not provide charging

If a recently purchased battery does not hold a charge, you need to check the generator. The performance of this vehicle unit is assessed using a multimeter. They measure the voltage at the battery terminals when the heating, lighting and music systems are on.

A value of 13-14.4 V is considered normal.

If the measurement result deviates downward, insufficient charge is supplied from the generator.

The causes of the malfunction are:

  • failure of the voltage regulator;
  • stretching or breaking the alternator belt;
  • diode bridge breakdown.

When the battery regularly loses its charge due to a malfunction of the generator, contact a car service.

The principle of the generator light bulb.

The battery does not hold a charge: the main causes of the malfunction and methods of its elimination

  • Why does the battery run out quickly?
  • Physical deterioration of the battery
  • Generator does not provide charging
  • Leakage current
  • Loss of nominal performance by electrolyte
  • The battery is short
  • Unsuitable operating conditions
  • Forgetful driver
  • Tips for Extending Battery Life

There are many reasons why the battery does not hold a charge. They can be associated with a malfunction of the battery itself, or with the breakdown of some parts of the car. In this case, it is impossible to start the engine. The problem arises both when using old and when installing new batteries. You can solve it yourself.

Conditions under which the car battery will hold a charge.

Why the laptop won’t keep charging?

The duration of work without recharging depends not only on the degree of deterioration of the battery, but also on the mode of use of the laptop. Resource-intensive applications such as modern games completely load the device and result in faster power consumption. In addition, the laptop battery does not hold charging due to numerous running applications, a cooler clogged with dust, and also due to violation of the rules for using the battery itself.

You can check the battery status using special utilities, or you can use the Windows command line. To launch the command prompt, press Win R on your keyboard and then enter the powercfg energy command. A report file will be saved in the root directory, which indicates the estimated battery capacity and the last recharge.

Laptop battery does not hold a charge: reasons and solutions

The question of how much a laptop battery holds a charge is constantly discussed on thematic forums. If a new battery provides many hours of battery life, then after a year of use, the capacity can be halved. This reduces the portability of the device and deprives it of one of its main advantages over a PC. It is necessary to understand why the laptop battery does not hold a charge, and what needs to be done to increase the battery life.

How to extend battery life?

The answer to the question of how much a laptop battery should hold a charge depends on the intensity of use and the chosen power plan. In economy mode, the charge can last for several days if you do not run any resource-intensive applications. However, if you listen to music, go online via Wi-Fi, connect flash drives, etc., then the charge will last only 3-4 hours.

The main ways to solve the problem:

  • Find an economical power plan. Configure the monitor to turn off quickly and enter hibernation mode after shutdown. Switch off the device when you no longer need it, as the battery continues to drain power even in sleep mode.
  • Get rid of unnecessary applications and resource-intensive services, clean up virus programs. All of them create an increased load and consume energy intensively.
  • Do not use screensavers. they also increase energy consumption.
  • Clean the cooler from accumulated dust from time to time. If it cannot cope with cooling, the system increases its power, which leads to an accelerated discharge of the battery.
  • It is best to store your laptop in a cool but not cold place. Overheating and overcooling negatively impacts battery performance, dramatically reducing battery life in just a few months.

To avoid overheating your laptop, it is undesirable to work with it in bed and cover the cooling vents. The use of special stands with coolers helps to reduce the temperature. Following a few simple guidelines will maximize battery life. and it holds a charge much better.

Another important rule is that the battery cannot be stored in a discharged state, this will completely disable it. Any batteries last much longer if disconnected from a laptop connected to the network. However, they need to be fully charged and discharged several times a month.

The screwdriver battery does not hold a charge. what to do?

Loss of battery capacity in a screwdriver is almost always inevitable. You can, of course, slow down this process a little, but not avoid it. If the screwdriver’s battery does not hold a charge, then the owner either uses the tool very intensively, or the tool itself gradually reduces its capacity.

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Electric screwdrivers are divided into two types:

  • Those that are powered by the network;
  • And from the battery.

If working with the first ones is inconvenient, then the second one has another disadvantage: the relatively quick wear of the batteries (1-5 years, depending on the model and frequency of use). And it seems that not everything is so scary, because it can be replaced and the tool can be successfully used further, but the problem is that a pair of new batteries costs almost like a new screwdriver.

The battery of the instrument can also lose its capacity due to oxidation inside, that is, sulfalation. If you look at the disassembled screwdriver, you can see a yellowish powder coating on some parts, due to which the parts will not function normally.

To find out the state of the battery capacity without disassembling it, you need to put your hand on top while charging and hold it for a while. If everything is in order with the battery, then it will heat up to 30 ° C, the hand will not feel this temperature, but if it still loses its performance, it will heat up to 50-60 ° C, which is easily perceptible.

Household types are considered the most common and, accordingly, the cheapest units. They contain one or two nickel-cadmium batteries, as well as a so-called memory effect, which is not found in other species. It manifests itself then, when the battery is not fully discharged, it is connected to the network again and is not fully charged. This means that the battery simply does not understand its charge level.

What to do if the screwdriver battery does not hold a charge?

To begin with, in order to restore the lost power, you need to prepare the necessary tools. For this you will need:

  • Soldering iron;
  • Tester;
  • Tin with low corrosive flux;
  • Screwdriver;
  • Spare donor battery or new individual cells (banks) that make up the battery.

Before starting work, the batteries need to be properly charged, at least 6 hours each. Then, using a screwdriver or knife, carefully remove the cover from the recoverable battery.

After that, you can start looking for damaged elements, for which you need a tester. Very high quality and durable testers, produced by the Interskol power tool company, they have the best performance in terms of price / quality ratio.

With its help, it is necessary to carefully check all the banks. For those that are working, the voltage should be 1.2V if the battery is nickel-cadmium or nickel-metal hydride, and 3.6V if it is a lithium-ion battery. For non-workers, the indicator will be close to almost zero. They must be marked in order to clearly know which parts are being replaced. The same must be done with the other battery.

Further, everything is extremely simple. From the “sick” unit we extract not the working elements, but from the other. the necessary undamaged ones. The latter, using tin with a low-calorie flux, are carefully soldered in place of the former. If you do not use a donor battery, but separately purchased cans, then put them instead of the damaged ones. We insert the soldered assembly back into the case.

If the battery is nickel-cadmium or nickel-metal hydride, then after assembly it needs to be charged again, but not for 6 hours, but 12. You cannot turn on the tool immediately after charging, because the soldered parts may overheat and fall off. Then, the same battery will need to be discharged, keeping the tool working until it turns off by itself. With this procedure, it will last much longer. By the way, it is recommended to carry it out at least five times before using the screwdriver.

You can also discharge the battery using a regular 12-volt bulb. Connect it to the battery and wait until it goes out.

Upgrading dead Black and Decker Screwdriver to Li-ion. 282

The lithium-ion battery can be used immediately after assembly.

Also, other malfunctions may occur. For example, failure of a thermistor, or loss of contact at the soldering points. But this is more common in fake tools, so you need to be very careful when choosing, it is best to buy a product from the aforementioned Makita company, because it is considered the golden mean in the power tool market.

How else can you restore battery cells

If, for any reason, it is not possible to restore the battery by replacing the faulty cells, you can try to reanimate them. Just keep in mind that this cannot be done with lithium-ion cans. Only batteries with nickel-cadmium cells can be reanimated.

There are two ways to resuscitate:

  • using a vice, pliers or hammer, seal the cans with a detected defect by squeezing;
  • make the firmware of faulty cans under high voltage.

Restoration of the screwdriver battery

The problem with fast self-discharge of the battery is quite common. It consists in fast charging, which takes about 20 minutes and the same short work.

This situation can be the result of improper operation of the thermal sensor located in the removable battery. This thermal sensor may not be installed as originally. You must return it to the place of purchase.

If the battery begins to discharge quickly after prolonged uninterrupted use, which could happen after a fall, you need to take on its repair.

What can break in the charger from the screwdriver

The fact that it breaks down in charging a screwdriver is known to specialists who daily face the problem of the inoperability of the tool. Buying a new charger for a screwdriver is irrational, so if the battery of the power tool does not gain charge, then you need to start the repair by looking for the cause of the breakdown.

The reasons for the inoperability of the battery charging blocks are the following parts and mechanisms:

  • Fuse. all electrical appliances that are not assembled “in the basement” have protective elements, and one of them is a fuse. It protects the charger board from overvoltages, stray currents, short circuits, etc. For this, a fuse is used in the design of the circuit, designed for the appropriate current rating, the value of which depends on the battery voltage. Usually its rating is 5A, and it is placed immediately after the transformer in front of the rectifier bridge. The fuse has a transparent glass cylindrical structure with steel contacts on the sides. Inside there is a “hair”, which is designed to transmit current with a limit of up to 5A (on different models, the current strength may differ)
  • Rectifier or diode bridge. if the fuse is working properly, and how to check it is described below, then we turn to the consideration of the diode bridge. These are four diodes, which are designed to rectify the current from the AC coming from the network to the DC required to charge the battery. To repair the rectifier, you will need to remove the faulty diode or all diodes, and replace them
  • A condenser is a large cylindrical barrel, which very often causes the device to fail. The capacitor swells, as a result of which the fuse breaks down, and often this also entails burnout of the diode bridge
  • High-voltage transistor of the inverter, which very often fails on the charging blocks of screwdrivers designed for 220V

Which element would not fail, but first you need to make sure that the breakdown lies precisely in the power supply itself. After all, they often sin on the power supply, although in fact it is high time to replace the battery. If you are going to repair the charging of the screwdriver, then you should start by checking the device for a malfunction. The instructions above describe how the unit itself is checked, so now we will find the faulty element, which is the reason for the inoperability of the charging.

Why the battery of the screwdriver does not charge

If the screwdriver is equipped with a rechargeable battery, then it must be accompanied by a charger. If at one point you find that the battery of the instrument is not charged after you put it on charge, then there may be several reasons for this:

  • A defective battery, which happens quite often when the instrument is not handled properly.
  • Charging malfunction. It often happens with Chinese instruments, which are much cheaper than branded products.

Despite the fact that there are two reasons for the lack of battery charging, the first step is to check the health of the battery. You can check its serviceability by connecting it to the terminals of a voltmeter or multimeter. If the device shows at least a similar value (12V, 16V, 24V), then the problem is most likely in the charger.

It is important to know! Most chargers are equipped with indicator lights (diodes) that indicate the charging process and its end. If, after connecting the battery, these elements do not show the charging mode, or do not light up at all, then the problem is in the charger itself.

Why the screwdriver battery does not charge. causes and elimination

The reasons for the absence or low level of charge, as well as ways to eliminate the malfunction, are different:

  • There is no contact between the terminals of the charger and the battery. This is a consequence of the fact that the memory plates are bent. Gently fold back the plates, returning to working condition.
  • Oxidation of terminals or dirt adhering to them. Contacts are cleaned and wiped with alcohol.
  • Failure of one of the “cans”. Disassemble the battery pack housing by removing the cover (unscrew the screws or remove the latches). Call each jar with a tester for voltage or discharge current. With tension it is easier. it is either there or not, but this method does not always work. The discharge current is measured at a load resistor. in a faulty can, it is an order of magnitude lower than in a working one. After diagnostics, the faulty jar is separated from the serviceable ones, and a new one is installed in its place, exactly of the same type, and with the same polarity orientation relative to the rest of the elements.
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Important! The most difficult part of changing a can is soldering the cans into a battery. At the plant, spot welding is used, and for DIY repairs, a soldering iron is often used. During operation, it is important not to overheat the battery, you need to work quickly.

There is another reason for the lack of charge, but it is characteristic only for nickel-cadmium batteries. the memory effect has worked, and the battery does not charge, although its resource has not yet been exhausted. In order not to bring it to this, it is important to carry out the charging correctly.

reference

If, after disassembling the battery, it is impossible to read their markings on the battery cells, and without determining the data, it is almost impossible to carry out high-quality repairs, you must pay attention to the designation of the material of their manufacture:

  • Nickel-cadmium batteries, identified by Ni-Cd symbols. The nominal voltage of each element is 1.2 V;
  • Nickel metal hydride elements are designated Ni-Mh. And the specified voltage is similar to nickel-cadmium and is 1.2 V;
  • the abbreviation Li-Ion refers to a 3.6 V lithium-ion battery.

Important. When selecting new batteries to replace failed ones, you should pay attention to their sizes and data, which should coincide as much as possible with the originals.

Restoration of cans

You should not throw away cans that have not been tested. Often the cause of their malfunction is the boiling off of the electrolyte or the leakage of distilled water. This occurs through the rubber band between the middle battery bus and its body. The electrolyte usually boils away with intensive charging.

To check if it can be restored, it is necessary to try to charge the battery, which shows a complete “zero”, with a 12 V pulse voltage passed through a resistance of 40-50 ohms. But at the same time, you need to carefully monitor so that it does not overheat. After charging, check the voltage, and if it is still not there, then the battery must be completely disposed of.

If a small voltage appears in the battery after charging, then it can still be restored. To replenish the boiled-down electrolyte, a small hole is drilled in the side surface, into which only the needle from the syringe can fit. Through this hole, water or new electrolyte is pumped into the battery with a syringe. The drilled hole is sealed with silicone, and you can try to charge it after a day.

Ni-Cd batteries

The most “senior” of the representatives of autonomous power supply elements are nickel-cadmium batteries. Despite the fact that at the European level, representatives of animal protection and the environment are constantly talking about the “toxicity and danger” of their production, they are still actively used in our country. And not a single screwdriver owner suffered from them.

Their main advantage is low self-discharge, and the battery can be stored without using it for a long time. Nickel-cadmium batteries are compact in size, their capacity, despite criticism from fans of more expensive counterparts, is pretty decent. And the price is the most affordable.

Of course, such batteries also have self-discharge. But at the same time, they love “pumping” with a standard charger: they are effectively charged, going through more than 1000 charge-discharge cycles.

In principle, any master may well be satisfied with the use of these “budgetary” elements, if he knows about one significant drawback. such as the “memory effect”. If such batteries are subjected to constant “recharging” without a full cycle, they tend to “accumulate” information about an incomplete charge inside themselves. Then they begin to work insufficiently efficiently, without using their real resources. It is in this case that the impression arises that the battery “sits down”.

How to properly charge Nickel Cadmium batteries? The answer is simple: if you want to keep the optimal performance of their work as long as possible, it is important that from time to time they are discharged completely, and then 2-3 cycles of “pumping” with the help of the charger follow.

This is done easily and simply and will not give the master any trouble at all. Any rechargeable battery can be completely discharged after several hours of continuous operation. And after that, you can simply put the battery to charge as usual, using a spare battery pack. The “memory effect” can only be removed in this way. of course, temporarily, but effectively.

Why does it hold a charge poorly or does not charge the screwdriver battery at all??

The use of a screwdriver is often necessary for various household needs. As you know, many electrical household tools can operate both from the mains and from batteries. This is very convenient, because the power cord has a “habit” of getting tangled under your feet, ending up in the wrong place at the most inopportune moment. Of course, using a battery is always preferable and much more convenient. But, unfortunately, there are times when, when you try to charge them, the batteries “do not take” the current, and the work can stop for a long time. If the battery of the screwdriver does not charge, or for some reason it quickly discharges, you do not need to panic right away. It is better to approach the reasons as calmly as possible and, having identified them, try to eliminate them yourself, if possible.

How screwdriver batteries are charged: rules, time, subtleties

Every craftsman who constantly works with electric tools should know how to charge a screwdriver battery so that the battery lasts longer, and how to properly operate the battery within the allotted period.

If you own a nickel-cadmium battery, be sure to charge and discharge it three times before use. This is necessary to optimize the battery capacity indicators. After that, standard charging will be required. The same manipulation can be done with a nickel-metal hydride battery.

The most “hassle-free” in this case are lithium-ion batteries. Their memory effect is not pronounced, and you can charge them without bringing them to full discharge.

It is recommended that you follow a few general charging rules that apply to all screwdriver batteries:

  • The battery should be charged at temperatures not lower than 10 ° С and not higher than 40 ° С.
  • Nickel-metal hydride batteries tend to heat up quickly. Therefore, the charging process must always be monitored to avoid overheating.
  • Remember that other batteries get hot too, especially if the room temperature is very high.
  • Take care of the possibility of cooling the elements in order to avoid their failure.
  • Do not leave batteries in the charger if you are not charging them.
  • It is better to store the battery if you remove it from a screwdriver, with which you do not plan to work in the near future.
  • If the batteries are not being used for a long time, remember to recharge them once a month. This will prevent a deep discharge, which can fatally affect the indicators of their capacity.

To the question of how long to charge the battery of a screwdriver, you can answer as follows:

My Battery Won’t Hold a Charge

  • small recharge of the battery can last 30 minutes;
  • the battery can be left on charge for up to 7 hours.

The time during which you need to charge a particular tool is always indicated in the instructions for its use. And this is always recommended to be carefully observed.

It is important to remember that chargers are different. There is a charger with a charge level indicator, which allows you to control the process and understand when it ends. At the end of charging, stop it immediately so as not to harm the battery.

For screwdrivers of different types, chargers are also different:

  • standard, ordinary “charger”. suitable for amateur-type tools;
  • impulse. more powerful, included in the package of professional tools, can charge a screwdriver for an hour.

What batteries are used in screwdrivers

In order to understand why the battery is quickly discharged, or does not take charge at all, you need to know about what types of batteries exist in general and what features each of them has. This will help you understand the specifics of the operation of a particular screwdriver battery and learn how to properly use the resource of a particular type of battery.

Three main types of batteries are usually used in screwdrivers:

  • nickel-cadmium;
  • nickel metal hydride;
  • lithium ion.
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Each of these battery packs has its own specific purpose. It depends, first of all, on the planned load on the power tool, because different work requires different indicators of its power and battery capacity.

Those who are well versed in screwdrivers and constantly deal with them know that two batteries are included in the standard package of any of them. If one of them is discharged, the other can always be used. However, this can not always save the situation. Self-discharge can occur at the most inopportune time. Especially if the battery has not been used for a long time.

Li-Ion batteries

And finally, the most modern and “powerful” ones are lithium-ion batteries. They can be found not only in more expensive screwdrivers, but also in all household appliances, in all gadgets: mobile phones, laptops and tablets.

The first lithium-ion batteries were very dangerous and often exploded. But at the present stage, the technology of their production has reached a certain perfection. All are equipped with safety and charge level controllers.

Lithium-ion batteries have a very high capacity. Neither nickel-cadmium nor nickel-metal hydride elements have such indicators. They practically do not have a memory effect, but they serve for a long time and are used, as a rule, in instruments of increased power.

The disadvantage of these batteries is their high cost and the fact that they may perform worse at low temperatures. Otherwise, lithium-ion cells are very good.

Recently, among electronics enthusiasts, it has become popular to replace the screwdriver battery from nickel-cadmium to lithium cells. If you need to constantly carry out intensive work, this becomes an excellent way out of the situation. You don’t have to buy an expensive tool with a ready-made lithium battery, but you can change one battery to another.

Which battery is better for a screwdriver, read here →

Ni-Mh batteries

The second group of elements most commonly used for screwdrivers are nickel-metal hydride batteries. They replaced nickel-cadmium as more advanced analogs.

The question of how much they are really more perfect than nickel-cadmium is still controversial. Their production technology is cleaner, so if you follow European standards, the ecosystem will not suffer. Nickel-metal hydride batteries have a memory effect, but it is much less pronounced.

However, they have a very high self-discharge percentage, and they need constant recharging so that their capacity is not irretrievably lost. Nickel-cadmium batteries, on the other hand, tolerate storage well without recharging.

If the screwdriver does not charge. what to do?

In the previous sections, we examined the specifics of the operation of certain batteries for screwdrivers. This information is important to understand how the tool can be restored to optimum performance if the battery runs out.

As it is already clear, most often the reason lies in the wrong approach to the process of charging a particular battery and the peculiarities of its storage. But what can be done if the screwdriver battery does not charge, and the operating conditions of the elements themselves were met correctly?

First of all, check the contacts between the battery terminals of your tool and the charger: often the charge current goes badly, or it does not go at all precisely because of the weak contact. If so, the way out is quite simple: carefully disassemble the charger and bend its terminals.

Oxidation and dirt and dust getting inside the charger can also cause the battery to not charge. The main signs of this, as a rule, are a reduction in the time of the charging process and the operation of the screwdriver itself. All you need to do to prevent this from happening is to monitor the cleanliness of the contacts and wipe them.

it should be mentioned once again about such a possibility as the bulkhead of the battery pack, the result of which can be either its complete replacement, or the partial replacement of failed batteries with working ones. With a complete replacement of the unit, you can fully charge the battery, and then use it until it is discharged. And if a partial replacement of the elements is carried out, it is imperative to “equalize” the charge level by “pumping” the assembled battery pack 2-3 times in a full cycle.

Read about restoring a screwdriver battery here →

If a master, who regularly uses a screwdriver, carefully handles the tool itself and knows the peculiarities of different batteries, he can easily find the reason why the batteries “run out” or the charge current does not flow. Therefore, it is so important to have basic knowledge of both the power tool itself and the batteries that are installed in it.

Problem: The laptop battery has stopped charging

It happens that a device that used to charge normally stopped doing it at some point. The laptop is working and the battery is connected correctly but not charging. This is confirmed by the absence of an inscription when you hover the mouse over the battery status icon in the tray. There are three ways to solve the problem.

Problem: Laptop battery is connected but does not fully charge

The problem is manifested as follows: the battery is charged, but does not reach 100%, i.e. does not fully charge. The operating time of the device from one charge is sharply reduced. For example, it worked up to 4 hours, and now it works only 40 minutes.

Method 1. reset battery settings in BIOS

  • Disconnect power. Unplug or unplug the AC adapter from the device.
  • Take out the battery. In models with a removable battery, and there are most of them, for this it is enough just to turn the device over and push back one or two locking devices that hold it.
  • Press the power button and hold it in this state for about a minute.
  • Insert the plug of the power supply into the laptop and connect it to the mains. In this case, you do not need to install the battery in place yet.
  • Turn on the laptop and enter its bios. To do this, at startup, press the key or their combination indicated in your user manual. Typical solutions: Del, F12 or F2.
  • Reset the settings to the preset value, Restore Defauts, and save the bios settings, Save and Exit.
  • Turn off the laptop by holding the power button for 5-7 seconds.
  • Turn off the power supply again and replace the battery.
  • Insert the charging plug and plug the power supply into an outlet.
  • We turn on the laptop in the usual way.

If the method worked, then we should see a message from the system by hovering the mouse over the tray icon: the battery is connected and charging.

What to do if the laptop battery does not charge?

When there are problems with charging, many ask the question. “why is the laptop connected but not charging?” and rush to replace it with a new one. Yes, the battery is a consumable item. It is designed for a limited number of charge / discharge cycles, and over time, the capacity becomes much less than the nominal value indicated by the manufacturer. However, the charging problem will not necessarily be solved by replacing it. In this article, we will look at the three most common problems and tell you what to do to solve them.

Check the battery status

You can check the battery status with the free Battery Health program for iOS or the standard Battery Care utility in devices running Windows 7 and 8.

Three main parameters of battery health are important to us.

  • Declared nominal power. This is the capacity of the new battery when it just left the factory.
  • Maximum power. This is the current capacity value.
  • Battery wear percentage. The larger this value, the higher the need for replacement.

The problem of not reaching the required level of charge is also solved by calibration.

Battery replacement (if necessary)

If the wear is high, then it is likely that it is the reason for the decrease in battery life. To solve the problem, you need a new battery, in most models it is removable. In this case, you can change it yourself. In a number of modern compact models, the battery is not removable and it will be more difficult to replace it yourself. It is safer to do this at a service center.

Method 3. if the power supply does not work

Another reason may be the loss of performance of the power supply and a decrease in the reliability of its plug. In this case, the battery has nothing to do with it. It’s easy to check.

  • Turn off the laptop, unplug the power supply from the outlet.
  • Take out the battery, insert the plug of the power supply.
  • Plug the power supply into a power outlet.
  • Press the power button.

If after that the laptop does not work, then the power supply or its cord is out of order. Also, an old power supply may not provide enough current to operate the laptop and charge its battery at the same time. Such a device must be replaced.