For fujifilm NP-40 , FinePix F610 Battery
Li-ion 3.7V 650mAh White
Battery Type Li-ion
Battery Capacity 650mAh
Battery Volt 3.7V
Battery Color French grey
Battery Weight 20g 
Dimension 40.28x35.28x6.10mm 

for fujifilm NP-40 , FinePix F610 Battery
This replacement Digital Camera Battery can replace the following part number:
BENQ
DLI-102,
FUJIFILM
NP-40,
PENTAX
D-LI8,
SAMSUNG
SLB-0737,
This replacement Digital Camera Battery is compatible with the following models:
BENQ
X600,
FUJIFILM
FinePix 455 Zoom, FinePix F402, FinePix F455, FinePix F460, FinePix F460 Zoom, FinePix F470, FinePix F470 Zoom, FinePix F610, FinePix F610 Zoom, FinePix F700, FinePix F700 Zoom, FinePix F710, FinePix F810, FinePix F810 Zoom, FinePix F811, FinePix V10, FinePix V10 Zoom, FinePix Z1, FinePix Z1 Zoom, FinePix Z2, FinePix Z5fd,
PENTAX
Optio A10, Optio A30, Optio L20, Optio S, Optio S4, Optio S4i, Optio S5i, Optio S5n, Optio S5z, Optio S6, Optio SV, Optio SVi, Optio T10, Optio W10, Optio WP, Optio WPi, Optio X,
RICOH
Caplio 10G,
SAMSUNG
Digimax #1, Digimax i5, Digimax i50 MP3, Digimax L50,