Battery Performance:
Perhaps one of its more interesting features is the option between two battery types. The standard removable Li-Ion 550 mAh battery offers a standby time of approximately 80 hours and two hours of talk time. There's also an extended battery option with a 4000 mAh capacity, which significantly ups performance to 525 hours of standby and approximately eight hours of talk time. This flexibility would have been a boon for users seeking longer usage between charges.