Efest 21700 4000mAh 30A Rechargeable Battery

Retail Price: $12.99
Sale Price: $8.99
  • Shipping info: Usually Ships in 24 Hours
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  • Item #: 217004000
  • Condition: New
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Efest 21700 4000mAh 30A Rechargeable Battery

This IMR battery by eFest is a 21700 4000mah battery. It is rechargeable and has a flat top, both of which make it extremely versatile. These batteries work well with a multitude of vaping devices and box mods. They have a nominal voltage of 3.7V and a maximum charging current of 2.5V. This makes these batteries long lasting. Its discharge current is 30A and it has a temperature range of 0-103F degrees.


  • Model: IMR
  • Size: 21700
  • Nominal Capacity:4000mah
  • Nominal Voltage: 3.7V
  • Maximum Charging Current: 2.5V
  • Discharge Current: 30A
  • Style: Flat Top
  • Standard Charge: 2A
  • Charging Temperature Range: 0-103F degrees

Note:: Never leave your battery unattended while charging.

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