Original Casio NP-20 Battery for EX-Z3 EX-Z7 EX-M1 EX-M20 EX-S4 EX- S20 EX-S500 | eBay
Casio - EX-S20 Battery | Complete Battery Source
Amazon.com : Kastar NP-20 / NP20 Battery Charger Compatible with Cas Exilim EX Series Cas Exilim NP-20 NP20 Battery for Exilim EX-M1, EX-M2, EX-M20, EX-S1, EX-S2, EX-S3, EX-S20, EX-S10 : Digital Camera
CASIO NP20 NP20 Battery Charger Compatible with CASIO Exilim EX Series Casio Exilim NP20 NP20 Battery for Exilim EXM1 EXM2 EXM20 EXS1 EXS2 EXS3 EXS20 EXS10 - Newegg.com
Casio Lithium Ion Battery Np-20 4971850682585 | eBay
Battery and Charger for Casio NP-20 NP20 and Exilim EX-Z60,EX-Z70, EX-Z75,EX -Z77,EX-S500,EX-S600,EX-S770,EX-S880 Digital Camera - AliExpress Consumer Electronics