oGoDeal 380mAh Battery for Samsung Gear S3 Frontier/Classic | Compatible with Gear S3 Frontier (SM-R760) & Classic (SM-R770). 3.85V 380mAh Check model before purchase.

I purposely waited to write this review until I had some time on the battery, as some of these after-market watch batteries can be low quality and fail quickly. That is NOT the case here! This is an excellent bit of kit. Battery was installed in the Gear S3 watch in November 2019. It is now mid-June 2020, and it is still going strong. Even after eight months, I still see 75-80% battery life left after a full day of use (including an hour every night of S-Health use). The stock battery it replaced, which was several years old and puffy, wouldn't even make it 8 hours before it was dead. Changing the battery is not very difficult, although it is a bit fiddly and will cause you to ponder how they are able to mass produce these watches. The tools it comes with are surprisingly good quality: the screwdrivers have well machined aluminum handles, and it includes a good spudger that has come in handy several times on other projects. The instructions are quite good, with just a few areas that are just a touch confusing (but easy to figure out once you're in there), and clear warnings on areas to be careful. If your watch battery is not holding a charge anymore, I highly recommend this kit. The quality is excellent for the price, and the battery has held up very well.

Replacement battery working great 4 months in. Really not difficult, just follow the directions. Hardest part was prying the back off the watch. I wish I had known about these kits before I replaced the last watch for not holding a charge.

I was irritated with unexpected shutdown of my Galaxy watch. Turned out to be battery issue and this replacement given a new lease of life to my watch. Now the watch go on for almost 2.5 days without power saving mode on moderate use which is same as when I got the watch band new. The battery seems identical to what was in watch originally. supplied Y screwdriver seems of very good quality but + screwdriver seems to be a piece of junk (use your own). The process of replacement needs lot of patience and some level of experience in dealing with small electronics. If you are not technically inclined, don't try this. Note: Water seal may get damaged in this process so if you want your watch to be waterproof again, have some E6000 glue handy and put a thin line over the seal before closing the back cover. I have done that and mine seems waterproof again.

My Samsung Gear S3 Classic was dying quickly. It had already been going down hill, because it was only lasting 8 hours, instead of the 14+ hours that it had, when I bought it. Suddenly, within 3 days, it went from lasting barely 8 hours, to only lasting 2 hours. That's when I ordered this kit. If you're handy, this install goes fairly well. The issues I had, were outside of these tools. The back would not pry off, even though the tool was lifting it. It had become 'stuck' to the watch, and took a will to finally get it to release. Once it was off, the install was fairly easy (watching YouTube videos, to help). Keep in mind, these ribbon cables are small, so while the tools are small and work well, you'll need to be able to see/work with small connections. Once back together, my watch was once again showing over 14 hours of life! It's been a couple weeks now, and still going strong. My boss ended up getting the same kit, because his watch had died, last month. His watch back did not stick, like mine, but he had issues with his screws not releasing. His had some sort of lock-tight on the screws, which made his removal difficult in a different way. Again, not the fault of this kit. The screw driver worked fine, but the screws wouldn't budge. Eventually he was able to work them loose, tapping with a hammer (I would NOT recommend). His watch came back to life, and he can once again go a day without it dying.

I have the S3 Classic and was anxiously awaiting an announcement of a Galaxy Watch 2 ( I skipped buying the Galaxy Watch ). My battery on my S3 wasn't making it through the mid-afternoon. When the rumored release of a successor to the Galaxy Watch didn't happen in August, I decided to look at the possibility of replacing the S3 battery. I'm pretty handy but the couple of videos that I saw made it seem as if there were a lot of possibilities for breaking the watch to accomplish this. With my S3 only lasting for a few hours, I decided to try to battery replacement. It arrived the day after I ordered it and came with all necessary tools. The instructions were not bad but it was really helpful to look at a couple of you-tube videos. Prying the case open and then pulling the motherboard away from the chassis were both somewhat difficult as in each case I was pretty sure that I was going to crack something or rip a ribbon cable (note that when you pull the motherboard out it is connected by both the battery cable and another thin and delicate ribbon cable). Although some of the disassembly took a fair amount of force, if you work carefully, they both come free (you also have to be careful when pulling the old battery away from the adhesive that keeps it attached to the watch). Bottom line: After about 45 minutes I had pulled everything apart got the the new battery installed, and the watch booted up and is now working great. After about 15 hours of "always on" use I'm at 55% battery life. The watch is like new again. Assuming that the battery has a good long life, this was a great $21.00 investment for the battery and tools, and actually a fun project. One last bit of advice: When you pull the old battery away from the adhesive pay attention to where the battery ribbon connection connects to the watch. If you're not sure watch you-tube video.

I was reluctant to purchase a battery for my Samsung Galaxy Gear 3 classic. This watch was a refurbished watch from Amazon, and I was highly disappointed in the battery life after six months of usage. By the time I got to Christmas of 2021, my battery barely lasted 5 hours. In January, it would randomly shut off and not boot on a 80% charge. I grew frustrated and nearly gave up until my father-in-law suggested I purchase a new battery from Amazon. I did just that and I would suggest to not listen to the negative reviews on this battery. The instructions were easy to follow and I replaced my original battery in a matter of 20 minutes. The included screwdrivers and tools made getting the case open and removing the batter easy. Remember to be careful as the wires are very thin and you don’t want to break them. But if you go slow and easy, you’ll do just fine. I’ve had this battery in since May 7th and I couldn’t be more pleased. I pull the watch off in the morning and when I go to recharge the battery in the evening I often have 70% battery left after a full day’s use. Heavy usage the batter will drain to 55% by evening. Not bad for a replacement. I can easily get nearly 2 full days on one charge. Highly recommend.

I thought this replacement was going to be simple, but it WAS NOT. I thought that I broke the watch, but it ended up working. The small screwdriver stripped the screws connected to the battery also, which made it extremely difficult to remove. I probably won't be able to replace it again. But it is working great now that it's replaced.

Well, out of the box, this battery is the best one I have gotten yet. Holds a charge for over 48 hours. I am very pleased.

The battery came with all the tools needed to install it and take hurt the watch. They mistakenly put instructions for replacing the battery for an Apple Watch 4 in the box. Nevertheless I just googled YouTube for instructions on replacing the battery and a couple of great videos came up to guide me. You have to be very careful with four small ribbon connectors but just go slowly. It's like having a new watch again now. I'm sure the battery would last for almost 4 days if I ran it down to nothing! It works so well It's very impressive... Maybe better than the original battery in the watch. Highly recommended, but you have to be very careful in the installation that's not super simple!

Phone still works! Samsung battery replacement for the classic watch.

The battery is great and is performing well. The package was missing the opening tool so made the opening of the watch quite hard as I had to pry it with a small screw driver. Everything else was fine, instructions easy to follow, although I complemented them with a youtube video just in case.

Had my S3 for some years now, Battery barely lasting 2 day. Replacement was easy and all the tools were perfect. S3 has 4 days worth of battery now. Back to first day I got it.

Montre chargée toute la nuit jusqu'à 7heures du matin à 100%. Vers 21h30-22 h00 elle n'est plus qu'à 10 à 15%. Conclusion,batterie de mauvaise qualité. Ne pas acheter.