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Efest 21700 IMR Battery - 30A, 4000mah (2pcs)

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This pair of Efest 21700 cells are each rate for 30A continuous discharge with a capacity 4000mAh making them perfect for use with high wattage vaping devices.

Availability: Out of stock

Battery Capacity

Key Features

21700 Cell
30A Max Discharge
4000mAh Capacity


Efest 21700 IMR Battery - 30A, 4000mah (2pcs)

These 21700 IMR batteries from Efest are each rated for a max continuous discharge rate of 30A, with a capacity of 4000mAh. These cells are perfect for use in high wattage vaping devices as a pair, or use a single and carry a charged backup for extended use time.


  • Style/Size: Flat Top 21700
  • Dimensions: 21.5 x 70.4mm
  • Nominal Capacity: 4000mAh
  • Nominal Voltage: 3.7V
  • Maximum Voltage: 4.2V
  • Max Continuous Discharge: 30A


  • 2x Efest 21700 IMR Batteries - 30A, 4000mAh