The talk time is up to up to 1.5-3 hours and standby time is up to 8 days in optimal conditions.
The Nokia BL-5BT is compatible with:
Nokia 2600C / 7500S / N75 N-75 / 2608/ 7510.
To get the best life from your new battery, it should be charged for at least 3 to 4 hours for the initial time. Only two hours are necessary for the second and subsequent charges.