MPF Products 750mAh High Capacity Extended L-LL11 Battery Replacement Compatible with Logitech G7, MX Revolution (Gen 2) and MX Air Mouse : Electronics - Amazon.com
MX Air M RBQ124 MX Revolution G7 Battery for Logitech Mouse New Li Ion Rechargeable Accumulator Replacement 3.7V 600mAh 831409|Digital Batteries| - AliExpress