This mouse has a 600 mAh battery that Keychron advertises can deliver up to 70 hours with the RGB lighting off. While it isn’t mentioned explicitly on the product page for this mouse, we expect this to be the maximum battery life for continuous use while connected via USB receiver
Often, manufacturers will indicate separate maximum battery life for Bluetooth, which consumes less power than a USB receiver. However, Keychron hasn’t listed a separate value for Bluetooth battery life on its product page. If you have this mouse and want to share your experience with its battery life, feel free to reach out to us in the discussions.