Amazon.com : Battery Pack for Pentax Optio A10, A20, A30, A40 Digital Camera : Electronics
D-Li8 Battery Pack for Pentax Optio A10, A20, A30, A40, E65, L20, Optio S, S4, S4i, S5i, S5n, S5z, S6, S7 Digital Camera - AliExpress
Amazon.com : Replacement for Pentax Optio WP Battery and Charger - Compatible with Pentax D-LI8 Digital Camera Batteries and Chargers (750mAh 3.7V Lithium-Ion) : Electronics
Amazon.com: VI VINTRONS 740mAh Battery for PENTAX Optio P70, Optio P80, Optio WS80, Optio H90, Optio W90 : Electronics
Amazon.com : Battery for Pentax Optio I-10, RZ10, RZ18, WG-10, X70 Digital Camera : Electronics