The first time I worked for a month without recharging. Then it became much smaller, but holds for 10 days. I do not know where such a difference comes from, the backlight was on. Got pros: Very tactilely pleasant keyboard. The combination of lighting and no wires. Charging via USB C. Support for up to 3 devices. Communication via both USB receiver and Bluetooth. Its cons: Narrow shift version for the 2022 market. On the poppy on the right is an extra Opt button, and Ctrl is missing.