Wasabi Power Battery for Pentax D-LI50 and Pentax K10D & K20D Rechargeable lithium-ion battery for Pentax D-LI50 Rated at 7.4V and 2000mAh for a longer run time than the Pentax original Premium Japanese cells for longer battery life with no memory effect; CE Safety Certification; UL Listed Can be charged with the original Pentax charger; Meets OEM standards Includes battery with 3-year manufacturer warranty