DSTE 2x D-LI50 Replacement Li-ion Battery for Pentax K10 K10D K20 K20D Camera as NP-400 SLB-1674 BP-21 Battery Type : Li-ion Battery Capacity : 17.0Wh/2300mAh Output Voltage : DC 8.4V (max)/ DC 7.2V (mean) Info Function for Life Indication High Capacity for Stamina