Li-Polymer Camera Battery Np-40 Cnp-40 for Casio Ex-Z50 Ex-Z55 Ex-Z57 Ex-Z100 DSLR Camera - China Digital Battery and Digital Camcorder Battery price | Made-in-China.com
Synergy Digital Camera Battery, Works with Casio Exilim EX-S770 Digital Camera, (li-ion, 3.7V, 630 mAh) Ultra Hi-Capacity Battery : Electronics - Amazon.com