DSTE 2x D-Li109 Replacement Li-ion Battery for Pentax K-R K-30 K-50 K-500 KR K30 K50 K500 K-S1 K-S2 K-70 Camera Battery Type : Li-ion Battery Capacity : 15.5Wh/2100mAh Output Voltage : DC 8.4V (max)/ DC 7.2V (mean) Info Function for Life Indication High Capacity for Stamina