This is an unprotected flat-top cell. Note that the other common brand weapon lights are not rated for un-protected cells such as this battery.

• Size: 18350
• Approximate Diameter: 18.1mm
• Approximate Length: 35.0mm
• Manufacturer Rated Typical Capacity: 1100mAh
• Manufacturer Rated Minimum Capacity: 1000mAh
• Max Continuous Discharge Current: 10A
• Nominal Voltage: 3.6V
• Discharge Cut-Off Voltage: 2.5V
• Full Charge Voltage: 4.2V
• Weight: 26g