Gomadic Portable External Battery Charging Kit suitable for the Pentax Optio S7 Includes Wall; Car and USB Charge Options
Amazon.com : 2 Pack - Replacement for Pentax Optio S60 Battery + Charger with Car & EU Adapters - Compatible with Pentax CR-V3 Digital Camera Battery and Charger (1300mAh 3.3V Lithium-Ion) : Electronics
Amazon.com : Battery for Pentax Optio I-10, RZ10, RZ18, WG-10, X70 Digital Camera : Electronics
Pentax D-BC23A Battery Charger Stand 39240 B&H Photo Video
GAXI Battery Replacement for PENTAX Optio Z10, D-LI72 Camera Battery