Eveready L91BP-4 Energizer Lithium Battery Pack, Ultimate, Cylindrical, Nominal Voltage: 1.5 V, 3000 MILAMP-HR, Discharge Cut-Off Voltage: 0.9 V At 21 DEG C, Maximum Discharge Current: 3 AMP Continuous, 5 AMP Pulse (2 S On/8 S Off), Electrolyte: Lithium/Iron Disulfide (Li/FeS2), Positive Terminal: N