Amazon.com: Synergy Digital Camera Battery, Compatible with Samsung Galaxy S4 Zoom LTE Digital Camera, (Li-ion, 3.8V, 2100mAh) Ultra High Capacity, Replacement for Samsung B740AC Battery : Electronics
Gomadic High Capacity Rechargeable External Battery Pack suitable for the Samsung Galaxy S4 Zoom
Samsung Galaxy S4 Zoom - Mobile Gazette - Mobile Phone News
Samsung Galaxy S4 Zoom Battery also fits GT-I9200, SM-C1010