Amazon.com: UltraPro D-LI92 Battery 2-Pack Bundle 1200mAh Digital Video Batteries with Rapid Travel Charger for Select Pentax Cameras Including Optio I-10, WG-1, WG-2, WG-3, WG-10 and Others : Electronics
Li-50B Battery or Slim dual Charger for PENTAX Optio WG-2, WG-2 GPS, WG-3, WG-4 | eBay