Buy from Amazon.com : http://fave.co/1CGEmab

Two Halcyon 1400 mAH Lithium Ion Replacement Battery and Charger Kit for Pentax K-500 Digital

Product Description :
Package Includes 2 Halcyon Brand Battery 1 Halcyon Brand Wall Car Rapid Charger
Battery Specs 1400 mAh with Premium Japanese Cells
Halcyon Support Includes 5 Year Halcyon Replacement Warranty Full Membership Access to Halcyon Customer Support Website
Frustration Free Packaging No wasteful and dangerous plastic blister packs
Compatible with all cameras which take Pentax D-Li109 Batteries