You may choose a Nokia cell phone for its rich features and brand reputation. However all of the features in the world aren't worth anything if you lose power.
Here are a few popular choices from Nokia's range of cell phone batteries

BLC-2: Ultra Extended Li-Ion Battery (950mAh)
This one battery fits 23 models of Nokia cell phones and at a price of approximately $60.00. Models that suit this battery are : -
Models:6800, 6651, 6010, 3595, 3590, 3589i, 3588i, 3587i, 3586i, 3585i, 3585, 3570, 3560, 3520, 3395, 3390, 3360, 2260, 1261, 1260, 1221
Capacity: 1000 mAh.
Talk Time: 5.5 hours.
Standby Time : Up to 10 days
Approximate price: $60.00

BL-5C: Extended 850 mAh Li-Ion
Models: 7610, 6822, 6820, 6682, 6670, 6620, 6600, 6230, 6030, 3660, 3650, 3620, 3600, 3120, 3100, 2600, 2285, 2270, 1100
Capacity: 850 mAh
Talk time: 6 hours
Standby time: Up to 17 days
Approximate price: $ 50

BLD-3: Extended 760 mAh Li-Ion Battery
Models 7250i, 7210, 6610, 6585, 6560, 6225, 6200, 3300, 3205, 3200
Capacity: 760 mAh
Talk time: 4 hours
Standby time: Up to 12 days
Approximate price: $50.00

BLC-1: Standard Li-Ion Battery (825mAh)
Models 6010, 3595, 3590, 3588i, 3587i, 3586i, 3585, 3570, 3560, 3520, 2260, 1260
Capacity: 825mAh
Talk time: 6.5 hours
Standby time: Up to 9 days
Approximate price: $ 50.00

BL-4C: Extended 720 mAh Li-Ion Battery
Models 7270, 6170, 6102, 6101, 6100, 5100, 2651
Capacity: 825mAh
Talk time: 4 hours
Standby time: Up to 270 hours
Approximate Price: $50.00
Nokia