2 Pieces Z55H Replacement Battery, 3.85V 75mAh High Capacity Li-ion Battery for WF-1000XM4 WF1000XM4 WF-SP900 Bluetooth Headphones Battery with Repair Tool Kits

Great little kit and all items required to change batteries are in the kit. Allowed me to fit correctly new batteries in my Sony wf1000mx4 ear buds and avoid throwing them away. Follow the YouTube videos on line and you won’t go wrong. Used the kit a few days later to fix another piece of electronics.

Kit is generally good and has everything you need except the glue, however the tweezers are made of cheese and completely useless, i suggest buying a metal pair or at least metal tipped.

This toolkit and two rechargeable batteries have given my much loved and very expensive earphones renewed life for long into the future. I am very pleased. Of course you can pop the lids off with a strong thumb nail (which I did). But you are covered for all eventualities with this bundle here. Recommended.

This comes with some handy tools. The metal pick particularly is helpful. Following instructions online, I sadly damaged the ribbon cable inside and my earbuds are now toast. But that is my fault. I can't comment on how well it works when reassembled. I can only comment that the kit. The batteries are correct. It loses a star, not because of my ape like hands, but because you can't reassemble without electronic glue, and this kit doesn't contain any. So you have to buy some.

Job is done, this saved me spending another £200+ to a new set of ear buds, or at least paying the Sony Service Center to do it for me.

Its a shame things in life dont last forever, and thats especially true for small powered devices such as headphones/earphones/earbuds, they always seem to going after decent use admittedly, but seemingly too short a period. Luckily there are replacement kits such as these, I've replaced tons of stuff myself after saving many hundreds of pounds with service charges This kit is for the Sony WF-10000xx and WF-SP900 series of earphones/buds. Everything you need is included for the rather modest £22.98, I've replaced one already but I need to go slowly or I break things. You have plastic tweezers and number of prying devices and screw drivers that seem to be of a far better quality than normal and of course the Li-ion batteries themselves.

For sony mx4 tou need 75mah or the app for the headphones will not show you the real charging functions. This is advertised as 75mah but on the battery it says 70!! Avoid this!

Excellent et facile a changer

Très bon produit, il convient pour le Sony wf xm4. J'avais acheté un produit similaire mais celui-ci à rapidement se mettre à chauffer lors du chargement du coup la pile à chauffer sans aucune raison. Ce pack est excellent grâce à ses outils. Lors de la mise en place de ces nouvelles batterie je recommande de pas les charger en USB , Mettez les seulement dans leur boîtier et pour le changement privilégiez un chargeur basse intensité et surtout pas les chargeurs a prise rapide. Bref Je recommande.

Todo salió según lo anunciado. El producto en sí es tal como se anuncia, aunque solo necesité usar las baterías, pinzas de plástico y pegamento. Descubrí que podía abrir la caja solo con mis uñas después de calentarla con un secador de pelo y aplique un poco de presión con una mini abrazadera. El pegamento en sí es suficiente para usar en los 2 auriculares y probablemente solo sea bueno para un solo uso, ya que el recipiente está prácticamente vacío. Por eso puesto 4 y no 5 estrellas. En cuanto a la sustitución de las baterías, no quité los cables ni el conjunto de placas de circuito . Una vez abierta la carcasa, calenté brevemente el interior con un secador de pelo caliente y, a continuación, quité con cuidado el conjunto de las placas de la parte superior de la batería y saqué la batería, que también está pegada en su base.

Super useful, makes it easy to do service.

Sehr gutes Packet ales dabei die Passende anleitung gibt es auf Ifix und dann ging das gut .