I have a MX Master 1. The battery started to die (wouldn't last for more than a day or two). So I poked around online and found some instructions on how to replace it. $5 in parts from ali express and my mouse now has a battery that's over twice as large as the original battery. Now one charge lasts for months.
remington_noiseless t1_j6xmf3z wrote
Reply to My MX Master 1 just died after 8 years - here’s why I still think it’s a BIFL product by joshjoshjosh42
I have a MX Master 1. The battery started to die (wouldn't last for more than a day or two). So I poked around online and found some instructions on how to replace it. $5 in parts from ali express and my mouse now has a battery that's over twice as large as the original battery. Now one charge lasts for months.