Yes, it's ubiquitous Samsung 25R, the most popular vaping battery of all time. Goes in just about anything, lasts for ages, and smashes out 20 amps without breaking a sweat. Now available in a twin pack with a free protective case!

Specs:

• Model Number: INR18650-25r
• Nominal Capacity: 2500 mAh
• Nominal Voltage: 3.6V 
• Discharge End Voltage: 2.5V 
• Standard Charging Current: 1.25A 
• Charging Voltage: 4.20+-0.05V 
• Max. Continuous Discharging Current: 20A

What's in the box:

• 1 x Samsung 25R (single pack), OR
• 2 x Samsung 25R (twin pack, includes free case)