Home > Discontinued >

Nitecore i4000R 4400 Lumen USB-C Rechargeable Flashlight
NITECORE i4000R 4400 Lumen Long-Throw USB-C Rechargeable Tactical Flashlight with 5000mAh battery

Click image to open expanded view

Price: $119.95

Quantity in Stock:(Out of Stock)

Availability: Currently Unavailable
Product Code: FL-NITE-I4000R

Add an Accessory:
None (Default)

This product has been discontinued. Please see the P20iX for the upgraded model!

NITECORE i4000R At-A-Glance

  • 4x high performance CREE LEDs for 4,400 lumen max output
  • Max beam intensity of 13,300cd and beam throw of 251 yards
  • Custom 5000mAh rechargeable 21700 battery
  • Protected USB-C charging port and indicator
  • Dual tail switches for intuitive controls and easy operation
  • STROBE READY technology for instant access to strobe

Included in the Box

  • NITECORE i4000R Flashlight
  • NL2150HPi 5000mAh Custom 21700 Rechargeable Battery
  • USB-C Charging Cable
  • Pocket Clip
  • Lanyard
  • Spare O-ring
  • CR123 Battery Magazine
  • NTH20 Holster

High Power Flashlight

Made with law enforcement in mind, the NITECORE i4000R draws on the latest technology to deliver an impressive 4400 lumen max output at 251 yards of reach. Enjoy single-handed operation with dual tail switches capable of momentary access and quick access to turbo and strobe. Press and hold the mode switch to access the strobe. Easily cycle through 4 brightness levels by short pressing the mode button while the light is on. Mode memory ensures that the same output is activated without surprise when the flashlight is turned back on.

USB-C Rechargeable

The i4000R runs on a high capacity 5000mAh battery, ready for long operations and high impact scenarios. Fast charge the battery by rotating the waterproof port cover and inserting the included USB-C charging cable. When charging is done, the tail power indicator will stop flashing.

Ideal Duty Light

Designed for safety, search and rescue operations, and law enforcement activities, the compact, 6.26-inch i4000R fits nicely in the included NTH20 holster for quick draw. Carry the light with ease by attaching the holster to a duty belt or any standard MOLLE system. With Advanced Temperature Regulation (ATR), an IP68 waterproof rating, and a 1 m impact resistant rating, the NITECORE i4000R is a must-have duty light for daily tasks and high impact operations.


Maximum Brightness4400 lumens
Peak Beam Distance251 yards
Peak Beam Intensity13300 cd
IP RatingIP68 - 2m submersible
Impact Resistance1 m


Turbo4400 lumens30m
High1100 lumens2h 15m
Mid330 lumens7h 45m
Low50 lumens40h
Ultralow2 lumens380h
Strobe4400 lumens--

Compatible Power Sources

NL2150HPi21700 i Series3.6VY (Compatible)
Primary Lithium Battery2x CR1233VY (Compatible)
Rechargeable Primary Lithium Battery2x RCR1233.6VY (Compatible)
18650Conventional 186503.6VN (Incompatible)
21700Conventional 217003.6VN (Incompatible)
NITECORE i4000R Product Overview
Average Rating: Average Rating: 4.5 of 5 4.5 of 5 Total Reviews: 61 Write a review »

Quick Charging 3.0 USB Charger Adapter
Price: $12.99

Quick Charging 3.0 USB Charger Adapter
Nitecore Intelligent 21700 Battery System - MPB21 Kit: Lantern, Dual Function Battery Charger
Price: $34.95

NITECORE Intelligent 21700 Battery System - MPB21 Kit: Lantern, Dual Function Battery Charger
Nitecore NTR10 Tactical Clip-on Ring, for New P12 P22R CI7 etc
Price: $8.99

NITECORE NTR10 Tactical Clip-on Ring for NITECORE Tactical Flashlights
Nitecore NL2150HPI 5000mAh Rechargeable Battery for i Series Flashlights (P20i, P20iX, SRT6i, etc)
Price: $25.95

NITECORE NL2150HPi 21700 5000mAh Rechargeable Li-ion Battery

  0 of 0 people found the following review helpful:
3 of 5 Lanyard for i4000R September 2, 2021
Reviewer: Moroni from UT United States  
The lanyard for this flashlight connects to the detachable clip that come with this flashlight.  Other models of nightcore flashlights have the lanyard connecting to the end cap which i prefer.  Didn't realize this while buying the i4000R.

Was this review helpful to you?

  1 of 1 people found the following review helpful:
3 of 5 Awesome Tactical Flashlight, but... August 18, 2021
Reviewer: Andrew Anderla from Perth Road, ON Canada  
Generally an awesome flashlight, the strobe button is incredibly disorienting/blinding.  I'm having issues with my second one, works intermittently right now.  

I suspect with the circuitry in the tailcap on new tech their lights are becoming more fragile.  My old SRT7 has been put threw way more than both put together.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 July 1, 2021
Reviewer: Jeffrey Killingsworth from Idaho Falls, ID United States  

Was this review helpful to you?

  1 of 1 people found the following review helpful:
1 of 5 Dead out of the box May 18, 2021
Reviewer: Upset from Bradenton, FL United States  
Shipping was a day early, so I give them that. However, the flashlight I received didn't work straight out of the box.  Now, my experience with this sort of thing is you send the item back and they immediately send you a new one.  In this case, I sent it back, they say they'll perform tests (probably to try to put it on me) to see what's wrong with it, then depending on what they find they will "Replace it as needed".  So instead of me having my flashlight in 3 days, 7 days later I still have no idea what the status on my flashlight is.  Not good Customer Service.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
3 of 5 Nitecore flashlight May 10, 2021
Reviewer: Robert ShumanSrrrhumanobert Shuman from SedArizonaona, AZ United States  
Very well constructed flashlight.  However, considering this is a 44oo lumen flashlight it does not appear to be as bright as i would expect.  Also it take over 4 hours to recharge the battery using the USB connection.

Was this review helpful to you?

View All Customer Reviews