Your Messenger Universal will keep you going for months, but you can check how much power it has remaining anytime you want. To check battery life, press fn + battery icon. The LED indicator will flash one of three ways.
1. Three green flashes indicate a full battery.
2. Three yellow flashes indicate approximately half battery life remaining.
3. Three red flashes indicate low battery life. When your Messenger Universal Keyboard reaches critical battery level the LED will flash red once every five minutes.
To help preserve battery life, your Messenger Universal will enter hibernation mode if left on and not used for twenty minutes. Press any key to wake your keyboard.