DC 3.7V 1150mAh Lithium polymer rechargeable battery for Logitech Wireless mouse MX Master (AHB303450 533-000088)，DIY 3.7-5V Electronic Products with Built-in 3-Wire Battery Replacement

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Remplacement de la batterie d'origine. Il suffit juste de remplacer le connecteur par celui de la batterie HS. De la gaine Thermo est fournie pour cela.

Completely useless product claims to be compatible with MX MASTER when the connector is 2 times too small and the battery size 2 times too LARGE for the battery holder / compartment of the MX MASTER

DC 3.7V 1150mAh fit fine as a replacement for my MX Master OEM 500mAh battery. At the end of its life it wouldn't even hold a charge. I'm hopeful of getting a much longer span between charges with this new one. You'll need a Torx 5 bit and a philips P1 to screw the case of the MX master. A nice toolkit is https://www.amazon.com/gp/product/B09LGXCZ9M. To replace the side slide feet, you'll need https://www.amazon.com/gp/product/B07JMKPFGC. I considered just buying a new MX Master 3 mouse, but I'm very happy and used to the original that I have and there's nothing wrong with it. I understand that they've changed the forward/back thumb buttons and I didn't want to have to change that muscle memory that I've had since I got it in 2015.

La batería aparentemente da buena imagen y calidad. Eso sí, tuve que intercambiar la clavija de conexión con la batería antigua. Por suerte traía un tubito el cual utilice para salvaguardar los empalmes.