Wasabi Power Battery for Leica 14464 and Leica M8 & M8.2 Rechargeable lithium-ion battery for Leica M8 3.7V and 1900mAh for a longer run time than the Leica original Premium Japanese cells for longer battery life with no memory effect Fully compatible with the Leica M8; Not compatible with the Leica M9 Includes 14464 battery with 3-year manufacturer warranty