DSTE&reg; 3x D-Li109 Battery + DC112 Travel and Car Charger Adapter for Pentax K-R K-30 K-50 K-500 KR K30 K50 K500 K-S1 K-S2 Camera Battery Type: Li-ion DC 8.4V(max) DC 7.2V(mean) Battery Capacity : 15.5Wh/2100mAh Info Function for Life Indication A 12V Car Lighter Adapter Convenient for Journey Travel Charger Input: AC 100-240V 50/60Hz Output: 8.4V 0.6A