Amazon.com : Synergy Digital Camera Battery, Works with Fujifilm Finepix Z1 Digital Camera, (li-ion, 3.7V, 710 mAh) Ultra Hi-Capacity, Compatible with Fuji NP-40 Battery : Electronics
Amazon.com: 2 Pack Fujifilm NP-40N Battery + Charger Compatible with for Fujifilm NP-40 Digital Camera Battery and Charger - Compatible with Fujifilm FinePix J50 F480 F610 Zoom F700 Zoom Z1 Z5FD F402
Fujifilm FinePix Z1 Zoom Battery - Replacement for Fujifilm NP-40 Digital Camera Battery (750mAh, 3.7V, Lithium-Ion) - Walmart.com