VINTRONS 3.7V Battery For FUJIFILM FinePix F810, NP-40N, NP-40, FinePix 455 Zoom, FinePix F700 Zoom Capacity: 850mAh / 3.15Wh Type: Li-ion Volts: 3.7V Size : 40.28 x 35.28 x 6.10mm