VI VINTRONS Battery for Logitech MX Keys, YR0073,

I purchased the VI Vintrons 533-000177 battery as a replacement for my Logitech MX-Keys keyboard (M/N YR0073) on January 24, 2024. I work from home and use my keyboard for several hours per day. The battery installed from Logitech would last for 1 1/2 to 2 months prior to needing to be recharged. Once the VI Vintrons battery was installed, I noticed that it was dying and requiring a recharge every two to three weeks. Over the six months this battery has been installed, the run time between charges has decreased to one to two weeks. It appears that either I was supplied a defective battery or that these batteries are constructed of sub par materials which do not supply the specified battery capacity. Unfortunately, I am well outside the Amazon return policy.

Me llegó hace unos días, tarda horas en cargar, y la pila le dura un día aproximadamente. La batería original le duraba meses cuando era nueva. Esa pila me duró cuatro años y medio. Guardando las proporciones, calculo que en un mes dejará de servir. Cuesta entre una tercera y una cuarta parte que un teclado nuevo. No lo vale.