EagleTac 18650P 3.7V 3400mAh Rechargeable Lithium Battery

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The EagleTac 18650 3400mAhs are the most popular 3400mAh cells in our store. Slim enough to fit in all lights and works in almost all lights.


+++ Full 6 Months Replacement Warranty +++


Ultra-high capacity

These second generation 18650 cells offer world-highest capacity at 3400mAh.

Only 68mm in height

We are the first to offer protected 3400mAh 18650 li-ion with only 68mm in height. That makes it highly compatible with all 18650 flashlights and chargers in the market.

Button top design

The protruded button top design makes it work with any flashlight that uses hardware anti-reversed battery polarity protection. It also ensure good conductivity when multiple batteries are used in series.


  • Made in Japan NNP battery cells
  • Uses newest and best LiNiCoAlO2 chemistry
  • 304 Stainless steel button top
  • IC protected against short, over-discharge, over-charge
  • Measures only 68mm in height
  • Button top design
  • Steel plate reinfocred bottom
  • Ultra high capacity and high voltage even under heavy loading
  • Safety vent with thermal cut-off protection


  • Voltage: Typical 3.6V (4.2V when fully charged)
  • Capacity: 3400mAh (discharged at 0.2C)
  • Dimensions: 18.6mm x 68mm (+/-0.1mm)
  • Current over-flow protection: 5A-6A
  • Weight: 50gram

High capacity

Our 3400mAh cells give the highest capacitor, especially during heavy current loading. It is tested to yield 3400mAh at 0.2C of constant current discharge (see our own discharge testing below).

High voltage platform

The ET 3400mAh 18650 offers high voltage output even under heavy loading. This offers longer constant regulated output runtime in a single cell application (buck circuit type).

High consistency

ET 3400mA batteries, when discharged at 1.5A, yields 3303mAh capa

6 Months Full Replacement Warranty

2 Reviews Hide Reviews Show Reviews

  • 5
    18650 battery

    Posted by Unknown on 6th May 2015

    One of the best 18650 fr Panasonic

  • 5
    Fits into my OR Bored Surefire C2 hosts

    Posted by Jonathan Kang on 6th Jan 2014

    Probably one of the thinnest 3400mAh cells around & it can fit into my Surefire C2 bored host.
    Package came packed individually in a small cardbox container.