[520mAh] Battery for Samsung Gear S3 Frontier(SM-R760) and Gear S3 Classic, (2025 New Version) Upgrade Replacement Battery for SM-R770, BR760, R765, EB-BR760ABE, GH43-04699A with DIY Repair Tool Kits

I've been in the market for a smartwatch for a while. I am very picky about the design and functionality. I love the look of the Samsung gear s3, just something about being able to spin the bezel reminds me about some of the watches I had when I was younger. So I was super stoked to find one one here on Amazon in the renewed section. Unfortunately this is an older model and was in acceptable condition but a steal at just 36.00. I noticed that the battery had a hard time keeping a charge and it would die within a few hours. Looking for accessories I found this replacement battery. It was pretty cheap and came with the tools to change it. It was not too difficult and took about 20 minutes start to finish to change. The hardest part for me was getting the back off without damaging the wires. Then putting it back together correctly. I would recommend taking some pictures before and during the process just to make it easier putting it back together. There is nothing solder it all just snapped back together easily. Put it on the charger and now it works better then ever and being 520ma the battery last almost twice as long. The only additional tools I use was a flat head screwdriver to gently pry the back off and a magnifying glass to be able to see the wire connections better. So now I'm into my watch for about 50bucks and absolutely love it.

Easy replacement. I watched a video on you tube. New battery lasted just under 3.5 days. Been consistent battery life over 2 charge cycles thus far. Ill update if that changes over the next couple months.

I have an old Samsung Gear S3 Frontier watch and after years of wear, the battery would no longer charge. I took it to a repair shop that does electronics repair. They said the price of replacing the battery would be about $125 but their problem was an inability to get the battery I needed. DUH? I watched a couple of YouTube videos and then ordered this replacement battery and kit for less than $20. Replacing the battery was not rocket science. I am a 71 year old woman and I managed. My watch is now as good as new.

Battery is good charged up fine and last on average 3 and a half days. Was not easy to install because the cable on the battery didn’t fit the alignment peg in the watch, the hole was to small but it still worked. It claims to be the same size as the original battery but the description says 430 mAh and not 520 mAh but I couldn’t tell any difference. This kept my watch alive so I’m happy!

Followed directions. Battery did not work at all. Arrived dead. Would not take a charge.

Gear S3 Frontier Tumi Edition was down for about a year but I missed it so much, I took the risk of doing the repair myself. It's was pretty easy as long as your careful and take your time! (FYI... The plastic blue tool was pretty cheaply made but it did manage to complete the job... Bairly!) Once completed, I threw it on the charger and it came back to life! Not only did it fix the issue, but I've had better battery life throughout the day than when it was a brand new watch! What use to last almost a day, gets me about a day and a half. And that does include wearing it to bed to track sleep! Definitely Recommend trying it out!

My watch (Samsung Gear S3 Classic) got new life with this battery. I'm not sure if it's actually 520mAh, as the device reports it to be the same as the previous, but the watch lasts pretty well again. Hasn't cured the watch of sometimes dieing after half a day, but I've come to understand that this is the watch messing up, and not the battery. I still love this watch, though.

UPDATE 7/2/21 [original review below - battery didn't work for me] The seller contacted me a few days ago and offered a replacement or refund. Having already replaced the watch, I opted for a refund. They were helpful and processed the refund within a couple of days. Given their good service, I would take the risk of getting a bad battery. Just be very careful when you take the watch apart, it's very fiddly with several tiny screws. And if it doesn't work, contact the seller immediately! Original Review Well, I'm crushingly disappointed. My Gear S3 is about 3.5 years old and the battery was barely making it through the day. I delayed buying this replacement battery because many of the negative reviews said that the replacement was no better. But eventually I needed one so got this one as it has the best reviews. And it has not helped at all - in fact I'd say the replacement is worse than the original old batter was. I've had the new one in for about a week, and use the watch to track activities most days. The battery was consistently down to 15% (low warning) by early evening. Today I decided to try without tracking, and by 1pm (about 6 hours of use) the watch just died with 0% battery. I foolishly threw away the original battery so can't even put that back. I'd return the product but it's not worth the hassle (replacement is quite fiddly), and I don't have another battery anyway! So now the watch has gone from somewhat usable to not really usable at all. Doing the replacement was fairly straightforward but quite fiddly - take your time and take care! The only issues I had were that the plastic philips screwdriver in the kit is useless, the tip rounded immediately - so make sure you have a decent one before starting. Secondly the new battery is very fractionally larger than the old one so didn't quite fit into the tray properly. But there's enough clearance that I was able to reassemble the watch. Overall I would say do not replace the battery unless the watch is not usable otherwise, and be prepared for no improvement.