Fenix HL18R-T V2.0 review

We have not tested this headlamp. We own none of the products on this site and have no laboratory. This review works from Fenix's own product page, read on September 27, 2026, and the arithmetic those figures allow.

Most headlamps in this bracket differ from each other by a few lumens and a strap design. The HL18R-T has something genuinely unusual: two white emitters at different color temperatures — a cool one around 6000 K and a warm one around 3000 K with a stated CRI of 80 — plus two red LEDs. Nothing else in our headlamp set does that.

What Fenix publishes

The dual color temperature is the reason to buy it

Color rendering index measures how faithfully a light source renders color against a reference. A typical cool-white LED sits around 70; Fenix states CRI 80 for the warm emitter here. That is not a high-CRI light by flashlight-enthusiast standards, but it is meaningfully better than the cold emitter beside it, and having both in one head is the point.

• Cool white at 6000 K cuts through distance and looks brighter for the same output. It is what you want on a path at speed.
• Warm white at 3000 K with CRI 80 renders color and reduces the flat, blue-gray cast that makes a cold beam tiring to read by. It is what you want in a tent, over a map, or working on something.
• Red, with an SOS mode, for preserving dark adaptation and for being found.

Warm light also scatters less usefully in mist and rain than people assume — the effect is real but modest. The honest reason to want two color temperatures is not weather; it is that one beam is better for moving and the other is better for looking at things. CRI explained covers what the number does and does not tell you.

Energy, computed

The AAA fallback is the practically valuable part. Three alkaline AAA cells hold roughly 3.9 watt-hours between them — a little over half the pack — and they are available anywhere. A flat lamp on the third night of a trip becomes a two-minute problem instead of a dead one.

The beam, computed

4.9 candela per lumen is a moderately wide beam, close to the Fenix HM65R-T's 4.5 and wider than the HM75R's 7.8. Sensible for running: enough spread to see your footing, enough concentration to read the path ahead.

IP66 is the odd rating out

IP66 is the only one on this site — every other rated lamp we cover is IPX4, IPX7 or IP68. The 6 in the first position means dust-tight, which almost no headlamp publishes; the 6 in the second means protection against powerful water jets, which is more than rain and less than immersion.

For a running lamp that is a sensible place to land. It will not mind a downpour or a dusty trail and it is not rated to be dropped in a stream. The Fenix HM65R-T publishes IP68 if immersion matters.

What it costs you

• Per-mode figures are charted, not printed. Fenix states 800 lumens, 125 m and 160 hours as maxima and puts the level-by-level breakdown in an image. Petzl prints the whole table in text, and that difference is why Petzl outranks Fenix in our brand ranking.
• 160 hours describes the lowest mode, not anything you would run on. Treat it as a reserve figure.
• 125 m is the shortest published reach of any Fenix lamp we cover.
• 1 m impact resistance, against 2 m on the HM65R-T.
• No candela, so the beam figure above is derived.
• Ten modes on a lamp for running is more interface than most people want at mile eight.

Who should buy something else

Skip it if you want one bright setting and nothing to learn. Ten modes across two color temperatures is a lot of cycling. The Petzl Tikka has three white levels and a red one.

Skip it if grams matter most. 103 g is reasonable and the Petzl Swift LT publishes 43 g.

Skip it if you need immersion protection or real reach. IP66 is not IP68, and 125 m is modest. The HM65R-T publishes 170 m and IP68 for more money and 37 more grams.

Skip it if you want per-mode figures before buying. They exist only in a chart image, and we will not transcribe numbers we cannot read reliably.

The verdict, stated as what it commits to

Fenix commits to 800 lumens, 125 meters, 160 hours at its lowest, a 1,900 mAh pack or three AAA cells, a 3-hour USB-C charge, 103 grams, IP66 and 1 m impact resistance — plus a dual-emitter arrangement giving four cool-white levels at 6000 K, four warm-white levels at CRI 80 and 3000 K, red and red SOS.

Buy it for the two color temperatures, which nothing else here offers and which genuinely change what the lamp is good at. Do not buy it for reach, immersion protection or a printed per-mode table. For the field ranked on what makers actually disclose, see headlamp brands.