Z55h Battery for Sony WF-1000XM4 (1 Set) Compatible for Sony WF-1000XM4 Battery Replacement Sony XM4 Battery Replacement Sony Earbud Headphones Replacement Battery Z55h Battery With Glue and Tool Kits

Batteries fit as stated for replacement.

Used these in to replace the original batteries in my WF-1000XM4s. They hold a charge and drain evenly after 2 weeks. Glad they work given the difficulty to replace them. The picks, tweezers, batteries and glue were the only parts I ended up using from the kit. Mainly wanted solid batteries. So far so good.

Awesome repair kit! You really can DIY replace the battery in the XM4s which are such great sounding earbuds, its so great to have them working again. New long lasting batteries. Definitely recommend.

This kit has saved my xm4 from the trash. My right one died and saw a lot of videos with people replacing the battery so I did just that and it work awesome. This kit include everything you would need minus a heating gun that you would need to heat up the glue around the ear piece. The prying tool is a little soft but it has a few just in case you need more than one to pry it open. Great kit to resurrect a dying xm4 (battery related of course)...

I was on the verge of selling my XM4's for parts until I found out I could simply need a battery replaced in them. I watched a simple video online about how to replace the batteries, did it myself in about 20 minutes, charged them up and they're working again! I'm extremely excited and happy! I honestly didn't need all the tools included in this pack (you might be more comfortable with finer tweezers) but I'm appreciative of all that is included.A great deal for bringing life to my earbuds!