As mentioned, the Messenger Folio features a powerful, rechargeable battery that lasts up to three months between charges. To check your Messenger Folio’s remaining battery power, press + (battery key). The LED indicator will flash one of three ways:
1. Three green flashes = full battery.
2. Three yellow flashes = approximately half battery.
3. Three red flashes = low battery. When your Messenger Folio reaches critical
battery level, the LED will flash red once every five minutes. To help preserve battery life, your Messenger Folio will enter sleep mode if left on and not used. To awaken your Messenger Folio, press any key. The Messenger Folio’s battery has no memory and may be charged whenever you wish.