D4V2 All Copper Quad 18650 LED Flashlight

D4V2 All Copper Quad 18650 LED Flashlight

Quick description:

D4V2 Cu




LED & Tint*

Please choose

  • Warning: Output will be dependent on cell model (incl.age) and temperature.

    Emisar D4V2 Cu puts a high lumen output but generates a lot of heat at the same time, please acknowledge before purchasing.


    High drain, flat top, unprotected battery required. (not included in the price)


    D4V2 reflashing kit purchase link





    • CNC machined from Copper.

    • Efficient UK made Carclo Quad LED optics. 

    • Anti-reflective coated glass lens

    • Unihead construction

    • High lumen output and low moon output

    • Ramping interface

    • Electronic soft touch switch

    • Beryllium-Copper springs with 45% IACS superior to stainless steel alloys used for springs with only 2% IACS.

    • Temperature step-down

    • Waterproof and dustproof to IP67 standard (up to 1 meter)

    • Default 18650 body with optional 18350 battery tube

    • Dimensions: 96mm(length) * 28mm(head) * 24mm(body), 65mm(lenght 18350)


    OTF lumen output at start-up:

    Nichia 219C : 3000lm XP-L HI : 4300lm

    SST-20 6500K: 4200lm

    SST-20 5000K: 4200lm

    SST-20 4000K/3000K 95CRI: 3000lm

    Nichia E21A version: 1200lm


    This product uses free software distributed under the terms of the GPLv3.

    Source code is available from http://tiny.cc/TKAnduril

    Customer Reviews

    • Thefossilchannel
      Great light with fun aux leds and feels great in copper January 21, 2021

      I reviewed this light on youtube under the same name. Overall its a great light and performs well. I ordered mine with 4 E21A 3500k emitters. The tint is amazing and high cri even better. One thing I would maybe see if if they can switch to a harden clear plastic or somewhat frosted plastic switch boot for the e switch as the flexible rubber in my experience can wear off. That being said its not a negative but a request for a different switch material option. I ordered mine with the 18350 tube and I havent gotten 18350 battery yet. The k9.3 came out and I've since realized that will be my next purchase. This is a great light for edc use if you dont mind the weight of copper. Here is my video review with beam shots if youre interested in seeing. https://youtu.be/H5EgBO5xWBY

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