Wasabi Power Battery for Pentax D-LI78, D-L178 and Pentax Optio L50, Optio M50, Optio M60, Optio S1, Optio V20, Optio W60, Optio W80 Rechargeable lithium-ion battery for Pentax D-LI78 Compatible with the original Pentax charger Premium Japanese cells for longer battery life with no memory effect Rated at 3.7V and extended 1000mAh for 45% longer run time than the Pentax original Includes battery with 3-year manufacturer warranty