DSTE 2x D-LI50 Battery + DC11 Travel and Car Charger Adapter for Pentax K10 K10D K20 K20D Camera as NP-400 SLB-1674 BP-21 Battery Type: Li-ion DC 8.4V(max) DC 7.2V(mean) Battery Capacity : 17.0Wh/2300mAh 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