HQRP AA Battery Holder-Adapter for Pentax D-BH109 K-r K-30 K-50 K-500 Digital SLR Camera 39100 Replacement + HQRP Coaster HQRP&reg; Battery Holder plus HQRP&reg; Coaster; Use AA batteries with your PENTAX K-r (K-30) camera! 100% compatible with Original Battery Holder; 200 Days warranty!