Battery Life
The R600 is powered by a removable Li-Ion battery (BST-20), providing between 90 to 150 hours of standby time and 2 to 4 hours of talk time. These figures were respectable at the time, ensuring that users could rely on their phone for a full day of moderate use without needing a recharge—critical in a pre-smartphone era where battery efficiency played a significant role in a phone's usability.