Nitecore E4K Review (Quad LEDs & 21700 Battery)


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Nitecore E4K Review (Quad LEDs & 21700 Battery)
发布时间:2020-04-10 浏览:16


The Nitecore E4K is newest flashlight from the E (Explorer) Series and it has been quite awhile since the E Series has been updated with a new model.

Let’s check out the merits and demerits of this new Nitecore E4K model.

Packaging & First Impressions

This is what the light will come with as shown below.

  • The threads and o-rings were well lubricated. Threads were rather smooth and clean (no gritty feeling at all).
  • The side electronic switch requires a fairly firm and deliberate press to activate, and helps in preventing any unwanted activation of the light.
  • Anodizing of the light is uniform without any missing specs.
  • The provided clip is reversible. However, deep pocket carry is possible with bezel-down direction only.
  • The clip has fairly sufficient tension to ensure that the light should stay clipped to any material to prevent the light from falling out.
  • The provided lanyard is able to support the full weight of the light and should hold up to the test of time.
  • The lanyard can be attached to the pocket clip only.
  • Battery compartment holds the provided non-proprietary Nitecore 21700 5000mAh (NL2150HPR) battery with more than sufficient room for a slightly thicker battery width. However, for this flashlight it is recommended to use a 21700 battery with a continuous discharge rate of at least 15A.
  • When using the CR123A Battery Magazine, 2 CR123A or 2 RCR123A/16340 batteries can be used instead. There is no battery rattle when the CR123A Battery Magazine is used.
  • Scanning the QR code with your phone/tablet on the box’s back would bring up the Nitecore E4K’s product page.


  • Before using the flashlight for the first time, remove the Insulation Film from the battery compartment.