Developed by Panasonic, the CR123A lithium battery has the following features: high safety and reliability; high current pulse discharge capability; superior shelf life/minimal self-discharge; operating temperature (-40°c~70°c); high energy density Best Rechargable Battery Systems Product Features Non-Rechargeable Lithium battery Rated 3 Volt, capacity 1.55Ah Size 0.67″ Dia x 1.36″ H (17.0 mm x 34.5 mm)