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
Amazon.com : Wasabi Power Battery (2-Pack) and Charger for Pentax D-LI8, D-LI85, D-L18 and Pentax Optio A10, A20, A30, A36, A40, E65, L20, S, S4, S4i, S5i, S5n, S5z, S6, S7, SV,