Dogcom 18650 3000mAh 3.7V 21.0A Li-ion Rechargeable Battery Cell (1pc)

Typical capacity (mAh): 3000

Packs Voltage (V): 3.7

Diameter: 18.0 ±0.3 mm

Height: 65.0 ±0.2 mm

Approx Weight (±1g): 47.0

Continuous Discharge Current (A): 21.0

Package include: 1x 18650 Battery only

If you purchase 2 batteries, it will come with the case (refer to photo above).