Efan INR 21700 battery 3750mAh 40A

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Efan INR 21700 battery 3750mAh 40A


Efan INR 21700 battery 3750mAh 40A, is a 21700 battery with high capacity 3750Ah at 3.7V. Special design with multi–protection for battery cell can make sure your safety, This battery is ideal for use with laser pointers, personal vaporizers, e-cigarettes or any other 21700 li-ion battery operated device

Availability:In stock



Efan Rechargeable batteries

All Efan rechargeable Li-ion batteries is a high capacity cells.


  • Designed with a protruding contact point for series use
  • Has no memory effect 
  • Negligible self discharge
  • Outstanding performance
  • Excellent reliability
  • Compact design
  • Is the best match for your high-drain devices such as Flashlights
  • More than 500 cycles
  • Light weight
  • Improved voltage stability due to low internal resistance 
  • One year warranty 

Further Info :

  • Li-ion batteries should never be left charging unattended under any circumstances. 
  • The user must have knowledge of how to charge and discharge Li-ion batteries before using them
  • Always use a charger that is designed to recharge the particular Li-ion cell that you wish to recharge
  • Never use a DC adapter to charge Li-ion batteries
  • We are NOT responsible for any damage that is caused by the misuse of Li-ion batteries
  • We recommend charging any Li-ion cell on a metal or other non-flammable surface.

Technical Specifications

Brand Efan
Battery Size 21700
Chemistry Li-Ion
Voltage 3.7V
Capacity mah 3750 mah
Max Discharge Current 40A
Dimensions D x L 21. 3mm x 70.5mm
Manufacture Quality Reinforced, High performance
Positive Pole Flat Top
Over Discharge Protection Unprotected
Precharge Non Precharded Battery
Common device Applications Toys, Electronics, Medical devices
Package items 1
Weight 45gr

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Efan INR 21700 battery 3750mAh 40A