How to Replace the Battery on a Samsung SM-R810 Galaxy Smart Watch

If the battery on your Samsung Galaxy Watch SM-R810 is dying quickly or the watch will not turn on unless it is on the charger or dies shortly after being removed from the charger, it is likely that your battery needs to be replaced.


If you would prefer to read a written repair guide, check that out below. Or if the tool cost seems prohibitive for a one time repair and you would prefer that we complete this repair for you, check out our Repair Catalog to see if we offer repair services for this device. 

Are you a business? We offer wholesale discounts on our repair services if you are sending numerous units in for repair or want to send us continuing batches of devices for repair on a regular basis. Contact our support team for more info (This email is only for wholesale inquiries, please contact for other inquiries).



Repair Difficulty: Easy

Time to complete: 30 Minutes

The tools and parts that you will need for this repair:

      1. A Replacement Screen
      2. Repair Kit (This includes the Y screwdriver and Flat edge screwdriver)
      3. 2.0mmx25mm Y Screwdriver
      4. A Small Flat Edge Screwdriver
      5. Small Phillips Screwdriver 
      6. Nylon Spudger Tool (For unlocking ribbon connectors and doing other tasks that require a non conductive tool)
      7. Some 704 RTV Glue for the back cover





1. Remove the Back Cover

 Start by removing the strap from your watch, then, remove the four screws in the back cover using your 2.0mmx25mm Y Screwdriver. They can be hard to remove so apply lots of pressure to keep the screwdriver securely seated into the screws so as to avoid stripping out the heads. 

Removing the four screws in the back cover


With the screws removed, all that is holding the back cover on is some adhesive. You can pry it loose by using a Small Flat Edge Screwdriver stuck into the edge of the casing at the bottom of the watch. Gently pry it up and work your way around the back casing until it is free. *Be careful of the heart rate sensor ribbon cable that is attached to the motherboard*

Prying up the back cover


Using your Nylon Spudger tool, disconnect the heart rate monitor ribbon cable from the motherboard. It simply connects straight down to the motherboard. (It might also be helpful to Watch This Part in the Video) The back cover should be free from the motherboard once this ribbon cable is disconnected. 

Detaching the heart rate monitor ribbon cable from the motherboard



2. Detach the Screen From the Motherboard

Start by unclipping the two ribbons at the bottom of the motherboard using your Nylon Spudger tool. 

Lifting up the two ribbon cables from the motherboard


Next, use your Flat Head Screwdriver to separate the motherboard from the screen assembly. There is a notch at the top of the motherboard where you can stick the screwdriver. **Do not try to fully remove the motherboard until the next step**

Prying up the motherboard assembly


Pull the two ribbon cables at the bottom of the mother board out and back towards the exterior of the watch then slowly lift the motherboard away from the screen assembly while feeding the ribbon cables through the slot in the motherboard. (It might be helpful to Watch This Part of the Video)

Lifting the two ribbon cables away from the motherboard and sliding them through the slot 

Pulling the motherboard away from the screen


3. Remove the Battery from the Battery Housing

Remove the black Phillips head screw that holds the motherboard to the battery.

Removing the black Phillips head screw that holds the motherboard and battery together


Using your Nylone Spudger gently pry away the motherboard from the battery on the opposite side of the board from the two ribbon cables. Once the motherboard is loose, gently pry away the two buttons on the side of the watch then remove the motherboard from the battery housing. 

Prying up the motherboard

Prying up the buttons from the side of the watch

Removing the motherboard


Using your spudger, pry up the battery out of its housing. It is only held in with adhesive.

Prying up the battery


With the battery free, pry up the power contacts that are attached to the battery housing starting at the outer edge, this will allow the battery to come out of the housing. 

Prying up the power contacts for the battery



4. Install the New Battery, Motherboard, and Screen

Line the charging connections up with their place in the battery housing and press the new battery and the charging connections into their places. 

Pushing the battery and connections into their places 


 Place the motherboard back onto the housing and press the two buttons into their places then reinstall the Phillips head screw that holds the motherboard into place.

Re install the Motherboard

Pushing the side buttons back into their places

Re-inserting the black Phillips head motherboard screw 


Re-attach the small square ribbon cable to the motherboard, then bend the ribbon cable on the new Replacement Screen back, then slide it through the slot in the motherboard.

Sliding the ribbon cables through the slot in the motherboard


Before you push the motherboard assembly back into its place, make sure that the buttons are properly in place. Both the ribbon cable buttons that attach to the motherboard, and the physical plastic buttons can move when reinstalling the board and either rip the ribbon or cause the motherboard assembly to not sit in the screen housing properly. Once you have determined that the buttons are lined up properly, push the motherboard into its place, you should hear a click when it is locked in place.

Checking that the button ribbons and plastic buttons do not move or get in the way when reinstalling the motherboard


Re-attach the screen ribbon cable to the motherboard. Make sure that it is properly lined up then lightly push the connector down to secure it.

Pushing the screen ribbon cable onto the motherboard



5. Test the Watch

Before you re-install the back cover, turn the watch on and make sure that the screen, buttons, and rotating bezel all function properly. 

Testing the functions of the watch



6.  Reinstall the Back Housing

Double check that the two ribbon cables on the motherboard are securely connected. 

Making sure the ribbon cables are securely attached


Apply a thin line of 704 Glue around the edge of the back cover. Make sure that the glue is one continuous line with no breaks to get the best water seal. You don't need lots of glue as there is already a seal around the back cover.  

Applying a thin line of glue to the back cover


Re attach the HR monitor ribbon cable to the motherboard. Then re-seat the back cover into the main housing and push down on the cover. If it will not clip into place, its likely because the motherboard assembly is not fully seated in place. If that happens, remove the back cover and HR ribbon and make sure the motherboard is seated properly. If any glue comes out of the sides when you place the back cover on the watch, you can wipe it away with a rag or Q tip and some rubbing alcohol. 

Attaching the HR ribbon cable to the mother board

Attaching the back cover to the watch


Re-insert the four screws into the back cover of the watch so that they are snug. Once you have reinserted the screws, you are good to get back to wearing the watch. We would recommend giving the watch a couple of hours to cure before getting it wet.  

Re-inserting the screws into the back cover



8. Get back to enjoying your gear 🤓

If you have any questions in regards to this repair feel free to shoot us an email or text and we will do our best to reply to you as quickly as possible. Please inquire using our Repair Catalog if you are wondering how much a certain repair will cost. If you do not see your item in our repair catalog, it means that we do not offer repair services for it. 


💬  360.362.1722

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