Original Replacement Battery D-li109 For Pentax K30 K50 K70 K500 Kr Ks2 Ks1 K-30 K-50 K-70 K-500 K-r K-s2 K-s1 1050mah - Mobile Phone Batteries - AliExpress
Pentax D-LI109 Battery (2-Pack) and Dual Charger by Wasabi Power
Amazon.com : BM Premium 2 Pack of D-LI109 Batteries and USB Dual Battery Charger for Pentax KP, K-R, K-S1, K-S2, K-30, K-50, K-70, K-500 Digital SLR Camera : Electronics