Nitecore/EDC

Nitecore i4000R

Name: Nitecore i4000R
Brand: Nitecore
Price: 85 USD
Availability: Discontinued

DiscontinuedNitecore no longer makes this light; what dealers have left is the last of it. See Nitecore’s current lights.

Four emitters on a 21700 cell gave the i4000R its high output, controlled by a tactical tail switch for on and off and a side button for mode selection. It was one of Nitecore's dual-switch EDC designs.

Beam profile

Flood, about 37° wide. Wide and even — light where you are, not where you're pointing.

Estimated from 4,400 lm ÷ 13,300 cd — how this works

$85

Specifications

Output: 4400lm
Peak intensity: 13300cd
Beam distance: 230m
Emitter: CREE XP-L2 V6
Colour rendering: 70 CRI
Beam type: Balanced
Cell: 21700
Runtime: 2 hrs (high)
Modes: 5 Stepped
Interface: Dual Switch
Water/dust: IP68
Dimensions: 5.2 x 1.1 in
Weight: 3.8 oz
Warranty: Lifetime

Manufacturer figures, measured to ANSI FL1 where the brand states it.

Features

USB-C Charging Pocket Clip Waterproof (IP67+)Tail Switch Momentary Mode

What owners report

Nitecore i4000R/4 sources reviewed

A quad-emitter 21700 search light at 4,400 lumens, using four Cree XP-L2 emitters behind a smooth reflector for 13,300 candela and 231 m of reach. Owners rate the in-hand feel highly — one specifically preferred it to an Olight they also own — and the tail switches, both electronic and mechanical, need a firm deliberate press, which usefully prevents accidental activation in a bag.

It's more flood than throw despite the reflector: one owner describes it plainly as a short-distance floodlight, which is the right expectation to set. Thermal control steps output down to prevent overheating and there's over-discharge protection. The one hardware gripe is that the supplied pocket clip isn't reversible.

Consistently praised

4,400 lumens from four XP-L2 emitters for genuinely broad coverage
Tail switches need a firm, deliberate press — no accidental activation
Built-in thermal control and over-discharge protection
Owners rate the in-hand feel above comparable Olights
USB-C rechargeable on a 21700

Common complaints

More a short-range floodlight than a thrower despite the reflector
The supplied pocket clip isn't reversible
Uses a special 21700 rather than a standard cell
Output steps down under thermal control, as any quad this size must
Too large to carry daily

Questions people ask

Is it a thrower?: No. At 13,300 candela and 231 m it's a wide-area light — one owner calls it a short-distance floodlight. Buy it to light up a whole yard, not to reach across a field.
What's it best used for?: Search, work sites, and anything where you want a large area lit at once. The firm switches also make it a sensible bag or vehicle light.
Does it take a standard 21700?: It ships with a special 21700. Check compatibility before buying spares — Nitecore's i-series cells are often light-specific.
Why does it get dimmer after a while?: Built-in thermal control. Four emitters in this body produce more heat than it can shed, so the driver steps output down to protect itself. That's correct behaviour, not a fault.

Sources (4)