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EFest 18650 3400mAh 3.7V Protected Li-ion Battery -button top

EFest 18650 3400mAh 3.7V Protected Li-ion Battery -button top

Part Number:

Efest 18650 Li3400


In Stock
Your Price:$5.99
Retail Price:$12.99
Your Savings:$7.00(54%)

EFest Protected 3400mAh rechargeable Li-ion - Panasonic Industrial NCR18650B 3.7V Cell - Button top Clearance Item

Top of the line, high capacity, high quality battery, which can exceed the specified 3400 mAh rating. This battery outperforms many others on the market! 

This battery is slightly wider and/or longer than other Efest 18650 batteries, and may not fit some devices. Please check the battery dimensions listed below to ensure it will fit your device!

Protection Features:

  • over current protection - 8 Amp cut off
  • over discharge protection - disconnects when voltage reaches 2.5 VDC to protect the battery
  • over charge protection - stops charging when it reaches 4.2 VDC
  • double short circuit protection
  • over heat protection
  • a heat resistant layer to make this power cell safer to use


  • Original Panasonic (Industrial) product, Made in Japan
  • Capacity: 3400mAh (Min 3250mAh)
  • Charging volt: 4.2v
  • Max charge current 0.7C 2A
  • Recommend discharge current 1C 2.9A
  • Discharge Termination Voltage: 2.5V
  • Protection kicks in : 2.75v and 4.2v
  • Over-Charging / Draining at 4.2v / 2.75v
  • Protection Circuit installed
  • Weight : 47g
  • Size: Diameter 18.5mm x Length 69.5mm (Larger than non-protected)
  • The voltage of full charge & empty condition is 4.2v & 2.75v respectively
Please Note: Must be charged with a Li-Ion Charger. Do not use a NIMH Charger. Please use an appropriate, quality charger and never leave to charge unattended. Do not carry in your pocket alongside keys or change - doing so may cause the battery to discharge/explode.

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