Wasabi Power Battery (2-Pack) and Charger for Pentax D-LI109 and Pentax K-r, K-30, K-50, K-500 | St. Cloud Camera & Photo
DLi109 D-LI109 D-BC109 Battery USB Charger for Pentax K-50 K50 K-30 K30 K-S1 KS1 K-S2 KS2 and K-r Kr DSLR Cameras - AliExpress
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
LVSUN Universal D-Li109 DLi109 Camera Battery Charger Car Adapter USB Port For Pentax K-r Kr K-1S K1S K-S1 KS1 K-30 K30 K-50 K50 - Newegg.com