Samsung 40T 21700 4000mAh 30A+

Samsung 40T 21700 4000mAh 30A+

A perfect "all-around" 21700 battery with peak performance at up to 75W/cell (multiply for dual/triple battery devices). 

Battery Specifications
  • Size: 21700
  • Battery Capacity: 4000 mAh
  • Nominal Voltage: 3.6 V
  • Maximum Voltage: 4.2 V
  • Discharge: 30A
  • Style: Flat Top
  • Protected: NO


  • Do not overcharge/overdischarge
  • Recharge drained batteries promptly
  • Do not short-circuit
  • Unused batteries should be stored at 50% charge
  • Do not dispose of in fire
  • Do not expose to extreme heat, water, or rough handling
  • Inspect cell wrapper regularly, do not use if torn or otherwise damaged
  • Batteries should only be transported in their original box, within a device, or in another dedicated protective case - NEVER TRANSPORT BATTERIES LOOSE IN A POCKET OR BAG

All batteries sold by Clear Sky Vapes are genuine original cells. If you are unfamiliar with handling lithium-ion batteries, please let us know in the order comments if you need any additional help or guidance.

Regular price$17.00
Shipping calculated at checkout.
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