Duracell lithium coin battery. High energy density. High rate discharge capability under intermittent or continuous drain (high power construction). Light in weight; high cell voltage. Immediate start-up capability and flat discharge voltage. Wide operating and storage temperature capability. Very long shelf life. High level of reliability. Resistance to shock and vibration. Operation in any orientation. Operation at high altitudes. UL recognized. 2V endpoint voltage. 2450 size. 540 mAh capacity. Measures 0.965-inches diameter by 0.197-inches height.