specifications:
Brand: CASIO
Type: li-ion
Volt: 3.7V
Capacity: 650mAh
Length: 50.90x32.80x4.50mm
Weight: 18.00g
Color: black
This Casio NP-20 Digital Camera Battery Replaces the Following Battery
Parts:
CASIO NP-20
CASIO NP-20DBA
This Casio NP-20 Digital Camera Battery Fits in the Following Models:
CASIO EX-S100 CASIO EX-S500EO CASIO EX-S500GY CASIO EX-S500WE CASIO EX-
S600EO CASIO EX-S600GD CASIO EXILIM EX-M1 CASIO EXILIM EX-M2 CASIO
EXILIM EX-M20 CASIO EXILIM EX-M20U CASIO EXILIM EX-S1 CASIO EXILIM EX-
S100 CASIO Exilim EX-S100WE CASIO EXILIM EX-S1PM CASIO EXILIM EX-S2
CASIO EXILIM EX-S20 CASIO EXILIM EX-S20U CASIO EXILIM EX-S2PW CASIO
EXILIM EX-S3 CASIO Exilim EX-S500 CASIO EXILIM EX-Z3 CASIO EXILIM EX-
Z4 CASIO EXILIM EX-Z4U CASIO EXILIM EX-Z60
visit for info about casio np-20:
http://www.power-batteries.net/digital-camera/casio/np-20.html
http://www.laptop-battery-inc.co.uk/digital-camera-batteries/casio-np-20.htm
A few month ago I bought one for $5.99 from
http://store.ibiao.com/retail/catalog/index.php
and am very happy.
It fit better then one I had bought from someone else previously