Amazon.com: Synergy Digital Camera Battery, Works with Pentax Optio A30 Digital Camera, (li-ion, 3.7V, 710 mAh) Ultra Hi-Capacity, Compatible with Fuji NP-40 Battery : Electronics
Battery 2 Pack + Charger for Pentax Optio WG 1, WG1, WG 2, WG2, WG 3, WG3 GPS, I 10, RZ10, RZ18, WG 10, WG10, X70 Digital Camera|Digital Batteries| - AliExpress
Cheap Battery | Replacement Pentax Optio L20 Battery | Pentax Optio L20 Digital Camera Battery