The SM1 Slim Mechanical Backlit Bluetooth Keyboard lasts about 16.5 hours on a full charge with the backlight on, and up to about 2 months with the backlight off.

• Backlight on: about 16.5 hours
• Backlight off: about 2 months

To charge the keyboard, connect the included USB-C to USB-C cable to the USB-C port on the keyboard. The space bar backlight turns red while charging.