How To Change Cmos Battery In Dahua Dvr?

As an Amazon Associate, I Earn From Qualifying Purchases.

Last Updated on September 22, 2022 by Ellis Gibson (B.Sc. in Mechanical Engineering)

If you’re like most people, you probably don’t know how to change cmos battery in dahua dvr. That’s okay, because we’re here to help. In this article, we’ll show you how to change cmos battery in dahua dvr, and we’ll also provide some tips on what to do if you can’t figure it out.

So, how to change cmos battery in dahua dvr?

1. Power off the DVR. 2. Remove the screws from the back panel of the DVR. 3. Take out the old battery and put in the new one. 4. Put the screws back in and power on the DVR.

Let’s dig into it and see if we can solve the mystery.

Step By Step Process Of How To Change Cmos Battery In Dahua Dvr?

Here I will explain you step by step process of how to change cmos battery in dahua dvr? let’s see how to change cmos battery in dahua dvr.


  1. Phillips Screwdriver
  2. Flat-head Screwdriver
  3. New CMOS Battery


First of all, you need to find the CMOS battery on your Dahua DVR. If you can’t find it, consult the user manual or contact the manufacturer.


Once you’ve located the CMOS battery, disconnect the power cord from the DVR. This is to ensure that there is no power running through the DVR when you open it up.


Open up the DVR case. This will usually involve removing some screws on the back or bottom of the unit. Again, consult the user manual if you’re not sure how to do this.


Locate the CMOS battery inside the DVR. It will usually be a small, round battery.


Remove the old CMOS battery from the DVR. This may involve unplugging it from a connector or simply removing it from a holder.


Insert the new CMOS battery into the DVR. Make sure it is properly seated and connected.


Close up the DVR case and screw it back together.


Reconnect the power cord to the DVR.


Turn on the DVR and test it to make sure everything is working properly.

If you wanted to watch a youtube video that shows you how to change cmos battery in dahua dvr? I have included a video below:

What Is The Purpose Of Cmos Battery In Dvr?

The CMOS battery in a DVR is responsible for providing power to the BIOS firmware. The BIOS is responsible for basic input/output operations, and it needs to be operational even when the DVR is not plugged into a power source. The CMOS battery ensures that the BIOS can continue to perform its basic functions even when the DVR is turned off.

Additionally, The CMOS battery in your laptop provides power to the BIOS firmware. The BIOS needs to remain operational even when your computer isn’t plugged into a power source.

What Is The Battery For In A Dvr?

A DVR battery is used to keep the clock set in the event that the unit loses power. This is a small, round battery about twice the size of a standard watch battery.

Furthermore, The MPEG4 DVR has a small battery inside of it to keep the clock set in case the unit looses power. The battery type is a Panasonic CR2032 3V battery. It is a round battery about more than twice the size of a standard watch battery.

How Do I Restart Nvr Dahua?

If you’re wondering how to restart your Dahua NVR, don’t worry, it’s a pretty simple process. Just follow these steps and you’ll be up and running in no time:

1. First, make sure that your NVR is properly powered off. You can do this by unplugging the power cord from the NVR or by flipping the switch on the back of the unit.

2. Once the NVR is off, wait for a few seconds before turning it back on.

3. Once the NVR is powered on, you should see the Dahua logo on the screen.

4. At this point, you can press the “Menu” button on the front of the NVR to access the main menu.

5. Use the arrow keys to navigate to the “System” menu and then press the “Enter” button.

6. In the “System” menu, navigate to the “Reboot” option and press the “Enter” button.

7. A confirmation message will appear on the screen. Press the “Enter” button to confirm that you want to reboot the NVR.

8. The NVR will now reboot itself and once it’s finished, you should be able to access it normally.

How Do I Reset My Dahua Digital Video Recorder?

If you’re asking yourself this question, don’t worry – you’re not alone. Many people who are new to the world of digital video recorders (DVRs) find themselves wondering how to reset their devices. Fortunately, the process is relatively simple. In most cases, you can reset your DVR by pressing and holding the reset button for a few seconds.

If you’re not sure where the reset button is on your DVR, consult your user manual. Once you’ve found the reset button, press and hold it for three to five seconds. In some cases, you may need to press and hold the button for a longer period of time. After you’ve released the button, your DVR should reset itself and reboot.

If you’re still having trouble resetting your DVR, you may need to contact your device’s manufacturer for assistance. They should be able to provide you with further instructions on how to reset your DVR.

How Do I Change The Cmos Battery For Dahua Dvr?

If you need to change the CMOS battery for your Dahua DVR, you will need to open up the case and locate the battery. Once you have found the battery, you will need to remove it and replace it with a new one.

What Size Battery Does A Dahua Dvr Cmos Use?

The Dahua DVR CMOS uses a 9V battery.

What Is The Dahua Dvr Date And Time Problem?

There seems to be a problem with the date and time on Dahua DVRs. The time will be off by a few hours, or the date will be wrong. This can be a problem if you’re trying to use the DVR’s recordings as evidence, since the date and time will be wrong.

There are a few possible causes of this problem. It could be a problem with the DVR’s internal clock, or it could be a problem with the DVR’s connection to a network time server.

If the problem is with the DVR’s internal clock, then you’ll need to set the correct time and date manually. To do this, go into the DVR’s menu and navigate to the “Date & Time” settings. From there, you can set the correct date and time.

If the problem is with the DVR’s connection to a network time server, then you’ll need to check the DVR’s network settings. Make sure that the DVR is set to connect to a time server, and that the time server’s address is correct.

What Is A Cmos Battery For A Dvr?

A CMOS battery is a small, round battery that helps power the DVR’s clock. The battery is located on the motherboard and helps keep the clock running even when the DVR is turned off. If the battery dies, the clock will reset and the DVR will lose any recorded programming.

What Are The Risks Of Changing The Cmos Battery?

There are several risks associated with changing the CMOS battery. First, if the battery is not properly installed, it can cause a short circuit that could damage the motherboard. Second, the battery could leak acid, which could also damage the motherboard. Finally, if the battery is not seated properly, it could come loose and cause a fire hazard.

What Are The Risks Of Not Changing The Cmos Battery?

If the CMOS battery isn’t changed, the computer risks losing all of its stored data. The battery powers the CMOS chip, which stores information like the system time and date, hard drive and optical drive settings, and BIOS settings. Without this battery, the computer can’t access this information and may not be able to boot up. Additionally, a CMOS battery that isn’t changed can cause system instability and random crashes.

What Should You Do If You Can’T Change The Cmos Battery?

If you can’t change the CMOS battery, you should try to reset the CMOS settings. To do this, you will need to locate the CMOS jumper on your motherboard. Once you have found the CMOS jumper, you will need to remove the jumper and then replace it after a few seconds. This should reset the CMOS settings and hopefully fix the problem.

What Should You Do If The Cmos Battery Needs To Be Changed More Than Once?

If the CMOS battery needs to be changed more than once, you should first check the manufacturer’s documentation to see if there are any specific instructions. If not, you can follow these general steps:

1. Power down the computer and unplug it from any power source.

2. Remove the battery from the CMOS battery holder.

3. Install the new battery in the CMOS battery holder.

4. Plug the computer back in to a power source.

5. Power on the computer.

What Are The Consequences Of Changing The Cmos Battery Too Often?

Changing the CMOS battery too often can have a few consequences. For one, it can be a waste of money if you are constantly having to replace the battery. Additionally, it can also lead to data loss if the CMOS battery is not properly calibrated.

Final Word

If your Dahua DVR is acting up, one possible solution is to change the CMOS battery. This process is not too difficult, but it is important to follow the steps carefully in order to avoid damaging your DVR. With a new battery, your DVR should be up and running smoothly again.


What Is The Process For Replacing The Battery In A Dvr?

The process for replacing the battery in a DVR is relatively simple. First, locate the battery compartment cover on the back of the unit. Next, remove the cover and locate the battery. Once the battery is located, disconnect the old battery and connect the new battery in its place. Finally, replace the battery compartment cover and screw it into place.

What Is The Model Number Of The Hikvision Dvr Cmos Battery ?

The model number of the hikvision dvr cmos battery is DS-7208HWI-SH. This battery is used to power the camera and record footage. It is a lithium ion battery that is rechargeable.

How To Solder A Cmos Battery?

In order to solder a CMOS battery, you will need:

– A soldering iron – A CMOS battery – Rosin-core solder – Flux paste

1. Clean the area around the battery terminals with a soldering iron.

2. Apply a small amount of flux paste to the area around the battery terminals.

3. Place the CMOS battery on the flux paste.

4. Apply a small amount of solder to the soldering iron, and then touch the solder to the area around the battery terminals.

5. Allow the solder to cool for a few seconds, and then remove the CMOS battery.

6. Inspect the area around the battery terminals to ensure that the solder joint is secure.

What Cmos Battery Size Does The Hikvision Dvr Use?

The size of the CMOS battery in a Hikvision DVR can vary depending on the model. However, most models use a 3.6V CR2032 battery. This battery is typically used in small electronic devices, such as watches and calculators.

Related Post: