2pcs Z55H Batteries and Charging case Battery, Replacement for WF-1000XM4 WF-1000XM3 WF-SP900 WF-H800 WF-SP700N WF-XB700 WF-C700N WF-C500 WI-SP600N with Adhesive Tool 3.85V 70mAh

So far the batteries are working and charged to 100% Will see how they survive after a year

Worked perfectly for my WF-100XM3 earbuds. Note: there are no instructions, so find a how-to video on YouTube.

Screw drivers weren't really necessary in this kit but the other tools and glue made this a simple replacement. Just note that I did have to add a scrap piece of carton against the back of the pcb in one ear bud as the the left over adhesive + glue wasn't giving enough pressure to keep the board pressed against the battery

Producto correcto

Maybe could have worked, but the tweezers tools were ineffective at separating the clip from the motherboard without considerable force which must have damaged the clip, so when I put it back together it wouldn't function at all. So now I'll be dropping another 200 dollars for a new pair of earbuds along with the 20 minutes and 20 dollars I wasted on this.

The kit is fine. Baterias are very good. Tweeters are not strong enough, maybe could be better. Glue is fine. Final result is what I was looking for.

Everything works good items as described

One battery worked, the other didn't. Tools worked

Las baterías son iguales a las que vienen de fábrica. Las cambié sin ningún problema y funcionan de maravilla. En el paquete viene todo incluido para el proceso de cambio, por lo que no necesite ninguna otra herramienta ni sellador. Lo que si es muy recomendable para hacer un trabajo limpio es conseguir una pistola de calor para aflojar previamente el pegamento de los audífonos.

Batteries are great. the replacement procedure is simple but of course hard with all the small parts. They do give you everything you need but the tweezers are bad build quality

Replaced the battery on my WF-1000XM4, and it went super well! The batteries themselves seem solid and worked right away. The included tools are okay, but not the best quality. I’d recommend using a thin metal tweezer instead — it makes the job much easier. Important tip: Be extra careful with the tiny ribbon cable and the locking connector — they're super fragile and can break easily. If you’re not getting power after reassembly, check that the top PCB is making good contact. In my case, I used a tiny dab of super glue to keep it in place, and that fixed the issue. Overall, great value and a solid replacement kit if you’re comfortable doing delicate work.

Batteries work and the tools, although not the best of quality helped. I decided to remove the board glued to the battery and didn't pull of the tiny cable attached to it and pried the battery off, and it was a better solution rather than suggested by YouTube and manufacturer's instructions. So, yeah I'm happy with the set 👍

Gave new life to my aging Sony earbuds, easy to use and satisfying