Streamlight 85175 CR123A Button Top Batteries are powerful and can now be purchased in a 2 pack. Lithium CR123A batteries are the way of the future. Many flashlights run using dual fuel and are capable of running on 2 x CR123A batteries. EDC flashlights, tactical flashlights, and many more can run on CR123A batteries. Now available in packs of two you will always have the perfect amount of batteries to run your flashlight to its fullest extent.