Pack of two Olight 1600mAh CR123A disposable Lithium batteries designed for high drain devices. 10 year shelf life. 

Specifications of Olight 1600mAh CR123A Lithium battery two pack OLB-CR123A

• Nominal Voltage: 3.0V
• Nominal Capacity: 1600mAh
• Cut Off Voltage: 2.0V
• Max Continual Discharge Current: 1000mAh
• Max Pulse Discharge Current: 3000mAh
• Dimensions: 17mm Diameter, 34.5mm Height
• Ref. Weight: 16.5g
• Operating Temperature: -40 to approx 60°C
• Will not provide High, Turbo, or recharge capabilities for the S1R Baton II.