Replacement Battery for Galaxy Watch 4 (44mm) & Galaxy Watch 4 Classic (46mm), EB-BR890ABY Battery for Watch 4 44mm SM-R870 & Watch 4 Classic 46mm SM-R890, with Repair Tools & Instruction

This is a lovely kit. The included screwdrivers are better than I'm used to for these kind of kits, the other tools are nice sold plastic, and the printed instructions are crisp and clearly printed. Note that they're the instructions from the iFixit guide, which is for the Watch 5 (not Pro), which is very slightly different. Notably, the display connector is on the bottom on the motherboard, not the top, as noted in a comment on the iFixit website. It's worth reading the guide on iFixit in addition to the included printout, since there's a bit more information online. Overall I didn't have any problems, and the paper guide was nice so I didn't need to fiddle with scrolling on the phone or laptop. The battery itself seems to be good quality. My Watch Pro 5 runtime is now roughly 2.5 days with the display set to not always on, and with Sleep as Android sleep tracking each night. This is in line with my memory from when the watch was new. Update: Three months later, the battery is still holding charge for roughly two and a half days. I charged to full Friday night, today it's Sunday morning and the watch is at 10%. See attached photo of the watch charge state. The only complaint I can imagine, is that the battery terminal connections are slightly larger than the OEM battery, making the overall footprint just a bit larger, so I had to use quite a bit of force to get the new battery in the compartment. However it DID fit, which at the end of the day is all that I care about!

This battery replacement and repair kit for the Galaxy Watch 5 does its job perfectly—even if my watch ended up having deeper issues. The kit comes with everything you actually need to open up the watch safely: the specialized precision screwdrivers, prying tools, and adhesive to reseal the back plate. The replacement battery itself fitted like an OEM component, dropped right into place, and took a full charge without any overheating or compatibility warnings. Unfortunately, my watch had underlying board/hardware issues beyond a degraded battery, so replacing the cell couldn't fully save the device. However, as far as the battery quality and the supplied repair tools go, the product performed exactly as advertised. Key Highlights Complete Tool Set: Includes all necessary precision bits and plastic pry tools to break the factory adhesive without marring the watch casing. Exact Fit: The battery matches the original Galaxy Watch 5 dimensions and connector specs perfectly. Great DIY Value: A fraction of the price of sending the watch to an official service center. If your Galaxy Watch 5 is simply suffering from standard battery degradation or short hold times, this kit gives you every tool and part required to execute a smooth, successful repair.

Bought in March. End of September and the battery is suddenly charging and draining incredibly fast. Can watch the battery charge up from 30 to 100 in a matter of a minute or two. Then watch the battery drain from 100 to 70 in under a minute. Phone and watch say no apps utilizing the battery. The cost is nice, and prolonged buying a new watch by a few months, but ultimately when it fails, it fails fast.

I'll be honest up front. I read a lot of the other reviews before I bought this kit and was hesitant, as many said the battery life wasn't worth the hassle of doing the replacement. We'll, I'm very happy to say they are wrong. First off, doing the swap is a piece of cake. Just take your time, be patient and even if you're not a maintenance engineer, it will be relatively easy. Second, and this is important, EVERYTHING is included. You will need no additional tools or equipment. But here's the most important part. This battery nets me an easy 32-36 hours of battery time. Between 5 AM when I get up for work and 9 PM when I'm winding down, my battery ends up at about 55 to 60 percent. Sure, there are watches out there now with batteries that last for days, but this is for older models of Galaxy watches. People should temper their expectations. Over 30 hours is more than enough, believe me. Don't doubt this kit like I did. Get it and get your watch back in use!

Although the battery works, it doesn't fully charge. It gets about 70-80% charge and thats it. You have to remove the watch from the charger and place it back and it might get it to 90% charge.

Pros - fairly easy to install and worked as advertised - better than buying a new watch Cons - the plastic splunge is nowhere near strong enough to remove the watch back - screwdrivers have the same markings so which is which? They do have different colors though - instructions are not very detailed HINTS - watch a utube video before you attempt installation - because the screwdrivers are virtually indistinguishable, stab them gently into the cardboard and you'll be able to tell which is a Phillips and which is a Y - get a metal splunge, you'll definitely need it to remove the back. I had one from a watch/tablet repair kit - I had to go back in because the watch didn't start first time. I learned you MUST use the tip of your finger to make sure the 4 connections are seated properly - charge and completely drain the battery at least twice

Got this to replace the battery in my wife's watch. I'm tech-savvy but I was impressed on how easy it was to swap out. The fit was perfect. The battery seems to be of good quality, but don't rely on the tools they provide, use your own. I like the fact they include tools with it, but they just didn't do the trick for me on this one.

Worked well for me, my Watch works perfectly again. Battery fit was exact, and so far it's holding it's charge for days. I can't comment on the screw drivers or the instructions since I didn't use them (I already had them). I did use the tweezers and the prying tool which were helpful in removing the back and disconnecting/reconnecting the tiny cables, and the double sided glue was good to have to keep the battery in place. Recommended.