In the system unit of your computer, on motherboard a small coin-shaped lithium battery is attached. The service life of this battery is quite long - up to five years. But when the computer clock will start to show the wrong date and time, and the BIOS settings will be reset, this battery will need to be replaced.
The contact pads of the new CR2032 battery have a voltage of 3.3 volts. During the operation of the motherboard, this voltage decreases and its level becomes insufficient for stable operation of the clock and support of the BIOS memory when the computer is turned off.
Then, when the system starts, a message will appear about the need to configure the BIOS parameters, and after loading the clock will show the wrong date and time. The same is true for laptops.
How to properly change the battery in the computer motherboard
Let's replace the battery! We will buy a CR2032 battery in the store, disconnect the power cord from the mains system unit, dismantle its left side cover, and place the system unit on the right side, which will provide access to the radio elements of the motherboard.
Let's find a discharged battery, it can be located anywhere on the motherboard. Pressing lightly on the battery, squeeze the latch and easily remove it from the slot. Proceeding in reverse order, install in the holder new battery, paying attention to the polarity (its positive terminal with inscriptions and a "plus" sign must be on top)!
Press lightly on the battery housing until the retaining spring clicks. A correctly installed battery is securely fixed in the holder. Now you can collect and turn on your computer!
At the beginning of the download, go to the BIOS, make the necessary settings and save them at the exit. Time can be set both in BIOS and after launch operating system.
And what to do if the battery in the laptop has "run out"? In this case, you should contact the service, because disassembling a laptop case often requires a special tool and is performed in a specific sequence. Trying to disassemble a laptop case yourself can easily ruin its appearance!
Never buy batteries "in stock", they have a limited shelf life!
BIOS is a software shell that ensures stable computer operation. All its settings and values are stored on the CMOS microchip, which, unlike hard disk, is volatile and requires a constant source of power - a battery. If it sits down, the computer will stop turning on.
Curbing
What is the battery on the motherboard for?
It is needed in order to power the CMOS dynamic memory chip, which stores not only the basic BIOS values, but also the computer configuration parameters. These include: boot priority from a specific media, power saving mode, memory status, display type, keyboard settings, and others.
Symptoms indicating that the battery needs to be replaced:
- Regular loss of custom settings.
- Unable to turn on the computer or laptop.
- Each time the operating system is started, it resets system time and it is different from the real one. This does not allow using many programs, some sites do not open, and the antivirus stops working, indicating outdated databases.
- Frequent sudden restart of the computer. This leads to the loss of important documents, as well as to incorrect closing of programs.
- The device boots slowly.
- BIOS displays a message about the need to replace the battery.
Where is the battery on the motherboard
The location of the battery on the motherboard may vary depending on the manufacturer of the device. But it is almost always easy to visually identify - it is a round-shaped lithium pill-battery with a diameter of 2 cm, located in a slot-cell, near the CMOS microcircuit.
On some boards, this battery may have a not quite standard form of attachment: for example, a closed plastic container where it is simply inserted or even soldered to the board. But in some laptop models, it can be very difficult for an ordinary user to get to it, since to find it, a complete disassembly of the device is required.
What kind of battery is in the motherboard on a computer and laptop
To replace the CMOS battery, it is advisable to use the same one that was installed on the device at the time of purchase. Usually, this is a battery with a marking, it has the following dimensions: diameter 20 mm, thickness 3.1-3.2 mm, and nominal voltage - 3v. These devices are used in many household appliances and can be purchased at your general electronics store.
There are other batteries that, according to their characteristics, can be suitable for powering CMOS memory, they have the same diameter, but less capacity and a different thickness, for example - 2.5 mm, and - 1.6 mm. When installing them, the basic rule must be observed - a suitable size and correct voltage.
How to change the battery on the computer motherboard
The easiest way is to replace the battery on a computer, because for this you do not need to have special skills and knowledge.
The main thing is to follow the basic safety rules.
- Buy a battery of the same model that was previously on the computer.
- Shut down the device and disconnect the power supply. After all, it is in the system unit that the motherboard is located.
- Remove the cover on the left side of the system unit by unscrewing the bolts.
- Visually locate the battery and pull it out of the groove by simply picking it up with something sharp. It is important not to put too much effort in order not to damage the motherboard.
- Insert a new battery.
- Assemble the computer by closing the lid of the system unit, connect it to the monitor and the network.
- Make BIOS settings.
Some masters, in order not to re-configure the BIOS, recommend changing the battery without turning off the computer from the network, but because of this, a short circuit in the motherboard may occur and it will burn out.
How to change the battery on a laptop motherboard
The tablet on the laptop motherboard changes in the same way as on the computer. But, there are exceptions - some models do not provide quick access to the CMOS battery, then you need to contact a specialist to replace it.
Replacing the laptop battery step by step:
- Turn off the device, disconnect the charger and remove the battery.
- Open the laptop case by opening the back cover.
- Visually determine the location of the battery and remove it from the special groove. In some cases, it is located in a closed plastic container located vertically or horizontally on the board. In this case, in order to get it, you need to push on the special lever, which is located on the side of the container.
- Change the battery.
- Configure BIOS and start the device.
If the CMOS battery is replaced quickly, in just 5-7 seconds, then the custom BIOS settings in this case do not fly off and they do not need to be adjusted again.
You can replace the battery on the motherboard either at the service center or on your own. It is advisable not to wait until it is completely out of order, but to do it once every 3-6 years. In order for this battery to work stably, it is better to give preference to well-known Japanese and Korean manufacturers when buying it.
Many have to rack their brains to get their hands on a battery for the motherboard. First of all, PC users are wondering what type of power source there should be. In fact, there are several varieties of batteries for this board. And today's article will provide answers to the most interesting questions.
What kind of battery is in the computer motherboard?
Often, the user, after opening the compartment on the system unit of a PC or laptop, notices a round type of battery. It is usually called cr2032. This type is used both on asus motherboards and on motherboards from other manufacturers.
Types of batteries used on motherboards
- cr2032 - capacity about 230 mA. This number is widespread everywhere.
- cr2025 - it is thinner, so you have to put something underneath to insert it. Capacity 150mA. Better to use the first type.
- cr2016 - capacity 90 mA. This brand of cmos motherboard battery is too thin and therefore not suitable for everyone.
If you do not know how to choose a battery for your motherboard, then everything is simple here. You can come to the store with an old power source. And ask the seller to give exactly what you had.
It is best to give your choice to the element that has a high capacity.
Perhaps someone is tormented by the question in the motherboard, the battery or the accumulator? 99% of the battery is installed there. But you can also find a battery that is charged and used many times. If it will serve for more than 10 years, then it is very profitable.
To find out what type of energy source you have, you will have to disassemble your computer a little. With large PCs, everything is simple, unscrewed a couple of screws and removed the cover. In laptops, everything can be hidden deep.
Sometimes it happens that there is no battery on the motherboard, this is an unpleasant surprise. Apparently the manufacturer forgot to install it or decided to save money. Therefore, be careful when buying. But unfortunately, when purchasing a board in an online store, it is impossible to check the presence of a battery. If the profit is 100-200 rubles, it is better to take the mother at the local techno supermarket.
What is a battery on a computer motherboard for?
Responsible for the ability of a special program to control the date and time. It also allows you to maintain the work of Bios. In new personal computers, this element is used so that time does not get lost. BIOS or UEFI settings are independent of the power source. In previous versions of the PC there is a dependency and therefore a battery is needed for the electronic memory.
Today, most manufacturers produce machines with non-volatile memory. Thanks to this, the memory is not erased even without a battery. But still cr 2032 is needed in order for the system clock to work. This clock works even when the boards are in the warehouse. So it affects the time.
Now you know why you need a battery on the motherboard.
Will my computer work without a battery on the motherboard?
In principle, the PC will function, but not always, it all depends on the board. Sometimes it may not turn on. Time and date will go wrong, an error will be issued. Each time you turn on the computer, you will have to adjust the time criteria again. In addition, there may be malfunctions such as freezes. All settings in the BIOS will be lost, go to the default settings. The password can fly off.
The system may not start if you have it installed on the "C" drive. We'll have to run it in manual mode. Violation of the date and time will result in license failure on the programs. And for this reason, they may not start. Also in social networks it will be difficult to get there.
How many volts is the battery on the motherboard?
The voltage of the motherboard battery is 3 v. This voltage allows the device to be kept in working order for a long time.
Motherboard battery size
Diameter 20 mm, height 3.2 mm. But it all depends on the type of battery.
What does a motherboard battery look like?
Below is a photo of the battery.
How long does a motherboard battery last?
This power source does not sit down quickly. It can last up to 5-10 years.
How to check the battery on the motherboard?
You will need a multimeter to perform the battery check. It is an instrument for measuring resistance, voltage, current, continuity, capacitance and more. To understand whether the motherboard will work from a power source, just measure its voltage. If it is 2.5 volts, then it is better to replace the energy source.
The battery on the motherboard is checked as follows.
Step # 1.
Move the meter to the voltage measurement position.
Step # 2.
Attach two test leads to the battery poles. It is advisable to attach the red to the positive pole, and the black to the negative. Well, if you do everything in reverse, it's okay. The device will show the voltage, but only with the value "-".
If the battery in the motherboard has a low voltage, for example 2.5-2.7, then it is best to replace it.
Where is the motherboard battery in the computer?
In the Asus Z170-K motherboard, the battery immediately catches the eye. In the picture below, it is circled in red.
As you can see, the battery is securely installed in the board and is ready for use. In a portable laptop, after opening the lid, it will also be visible. In rare cases, this element may be hidden.
When to change the motherboard battery?
Do I need to change the battery for the MP? Yes, this should be done if:
- The battery is swollen.
- The voltage dropped to less than 2.7 - 2.8 volts.
- Reboot will reset the date and time.
- The system does not boot.
- The bios settings are now factory default.
- When you open browsers, a warning pops up that the certificate has expired.
- The anti-virus program complains about the old anti-virus databases.
- Various programs will not start.
- System error messages pop up. Especially CMOS.
- The appearance of the unload window is being modified.
- At the time of downloading, a request appears to press the button to continue downloading.
But more often than not characteristic feature failure of the battery is a failure of the date and time. In this case, you need to change the battery on the motherboard. How often to change? The frequency ranges from 5-10 years.
How do I replace the battery on the computer motherboard?
Changing the battery is quite simple. Before changing the power source, go to the BIOS and write down all the settings on a piece of paper. Or take a picture of them. For the BIOS to appear, press the reset button and hold the Delete key. After removing the battery, they will break.
7 steps for correct installation:
- Unplug the computer from the mains, power it off, and disconnect all wires. This is necessary in order to better extract the element.
- To remove the battery from the motherboard, take a Phillips screwdriver and unscrew the case.
- It is advisable to make the replacement in an antistatic wristband, or touch the case with one hand.
- If the battery is in a hard-to-reach place, then you will have to take out the motherboard.
- To remove the battery, press the latch on the side. Pull out the battery with tweezers or hand.
- Install a new energy source. Place the “+” side up.
- Secure the energy source by lightly pressing on it with your finger.
This way you will correctly insert the battery into the motherboard.
Video:
How much does a motherboard battery cost?
In different retail outlets prices fluctuate a lot. But usually a similar battery can be purchased for 50 - 100 rubles. The battery type will cost several times more. But on the other hand, it can be recharged and thereby extend its service life.
Everyone has a motherboard. And this board has an important chip called CMOS that stores system settings, BIOS settings, and other information. And so that all this important information did not disappear even after turning off the power of the computer, the chip is powered by a special battery installed on the motherboard.
Like any other battery, the motherboard battery will run out sooner or later and must be replaced. In order not to carry the computer to the service for the sake of replacement, you can figure out where the battery is on the motherboard and independently perform all the necessary manipulations. And in order to buy the correct model of a battery, you need to know its exact characteristics.
Battery labeling for the motherboard
We figured out what the battery on the motherboard is for and that you can replace it yourself. But it turns out that there are several types of batteries installed on the motherboard. It:
- CR2025, where 20 mm is the diameter, the thickness is 2.5 mm, and the capacity is 160 mAh;
- CR2032, with the same diameter of 20 mm, thickness of 3.2 mm and a capacity of 225 mAh;
- СR2035, diameter - the same 20 mm, thickness - 3.5 mm, capacity - 280 mAh.
It is important to purchase a battery with the same marking that was indicated on the one that was on the board when you bought the computer. Another simply won't suit you. So, if there was a battery with the numbers 2032 on the motherboard, then the thinner one will not hold in the connector and will not be able to come into contact with the contacts.
How long does a motherboard battery last?
The battery on the board lasts for a fairly decent period - from 2 to 5 years. In this case, keep in mind that when the computer is constantly turned off, the battery will drain faster than when it is running. And if the battery runs out, then all your individual settings "fly off", and after replacement you will have to restore everything from the beginning.
Symptoms that the battery on the computer's motherboard will soon run out are as follows:
- the time on the computer is regularly lost;
- the appearance of the unloading window changes;
- at the beginning of the download, a message or a suggestion to press a key is displayed on the screen to continue the download;
- antivirus “swears” at outdated antivirus databases, a paid antivirus program may lose a license key;
- some programs refuse to start;
- error messages are displayed on the screen, Special attention pay attention to such messages: "CMOS setup error", "CMOS control memory error", "CMOS read error".
Replacing the battery on the motherboard
You do not need special tools or special knowledge to change the battery yourself. It's pretty simple. Take a Phillips screwdriver and tweezers, turn off the computer and power it off, disconnect all wires from the system unit.
To get to the motherboard, you will have to remove the side cover of the system unit. If the video card interferes with access to the motherboard, you will have to remove it too. Either wear an anti-static wrist strap or grasp the computer case with your other hand at all times.
Gently pull the motherboard out of the connector, look carefully at the location of the battery without removing it, or, better yet, take a photo. This will then help you determine the correct polarity when installing a new battery.
Press the catch on the side of the battery and use tweezers to pick up the battery that has jumped out of the connector. Install a new one in its place, observing the polarity and assemble the computer back.
Do not rush to throw the removed battery into. It contains compounds of heavy metals that are harmful to the environment. Take it to a designated collection point for proper disposal.
Even an inexperienced PC user can handle replacing the battery on the motherboard of a computer. There is nothing complicated in this. You just need to follow the instructions and be careful. You also need to choose a battery for your motherboard. they differ in thickness.
There can be 3 types of batteries in a computer, they differ only in thickness.
- CR2032 (Is standard. Thickness 3.1mm);
- CR2025 (Thickness 2.4mm);
- CR2016 (Thickness 1.6mm).
To find out which battery you have, you need to pull it out and see what is written on it and buy the same one. Of course, you can put another one, but then it will hardly fit into the socket and there is a chance to break the holder or it will dangle and may disrupt the operation of the system. Therefore, it is better to install the same one that was installed.
The battery slot can usually be found on the lower right side of the motherboard. Batteries are hard not to find, since there are no more such elements on the motherboard. And it looks like this:
The first thing to do is turn off the computer and disconnect it completely by unplugging it.
To remove the battery, take tweezers, scissors, screwdriver and pry it off. Be careful not to let the tool jump off and damage the motherboard. Some motherboards have a special foot, by pressing on which the battery will pop out of its socket.
After replacing the battery, when you turn on the computer for the first time, the BIOS settings, date and time will be reset. Most likely, you will see the following error on the monitor screen: CMOS checksum error - Defaults loaded
You will be offered a choice, go to the BIOS settings or apply the default settings with the F1, F2, DELETE keys. Pressing F1 will continue with the default settings.
To remove the battery from the motherboard, you need to press on the special metal leg that holds the battery in the socket. Take out the battery if you need to reset BIOS settings or replace it.
It's hard to imagine, but such a battery can affect the operation of the entire system. When the battery on the motherboard runs out, the computer starts to glitch, slow down and then may not turn on at all. In order not to bring it to such a state, you need to know the signs of a dead battery on the motherboard and make a replacement in a short time.
1. The most common symptom, and the easiest to identify, is a time and date failure. The BIOS is responsible for the time and date; it is powered by this battery when the computer is turned off. If the battery runs out, the time and date is reset, which means that the battery needs to be replaced.
2.The second sign is that when you turn on the computer, you see the inscription CMOS checksum error. This means that your BIOS settings have been reset. If you have not done this, then the battery is already running out and needs to be replaced with a new one.
3. The next sign is that the computer began to slow down, randomly reboot or shut down.
4. Some motherboards have a battery charge sensor. If the battery is discharged, then you will hear a squeak when turning on. If earlier when turning on there were no extraneous sounds, but recently appeared, then there is a possibility that the battery has run out.
5.And the last sign is when the computer does not respond to the power button. This can happen if you ignore the above signs. As an option, the computer was not turned on for several years, but this option is unlikely.
It is worth paying attention to points 3 and 5. Such signs may be for other reasons, but it is worth starting the check with the replacement of the battery.
What is the battery voltage on the motherboard
The battery voltage on the motherboard is 3V... You can check the voltage with a multimeter or voltmeter. To do this, you need to get the battery out of the computer, before disconnecting and unplugging the computer. If the voltage is much less than 3V, then such a battery should be replaced.
V in this case it doesn't matter who the manufacturer of the battery is, they all work the same way. They will last from 2 to 5 years. It's just that some users are calmer and they think that a battery for 500 rubles will work better than for 50 rubles. But it is in this case that the price does not affect any role. There is no point in overpaying. On the Internet, prices vary from 30 rubles to 500. Personally, I bought for myself at 30 rubles.
