Battery or Wall Charger for Pentax D-Li90 D-BC90 Pentax K-3 II Mark III Camera | eBay
Pentax K-3 Mark III DSLR Camera (Black) 01051 B&H Photo Video
Amazon.com : PENTAX Battery Grip D-BG8 Black for Pentax K-3 III Flagship DSLR Dust-Proof and Weather Resistant Construction with Capacity to Hold Additional D-LI90 Battery (37048) : Electronics
Amazon.com : Pentax D-LI90E Rechargeable Lithium-Ion Battery for 645, K-1II, K-1, K-3II, K-3, K-7, K-5, K-5II & K-5IIs DSLR's : Digital Camera Batteries : Electronics