Fenix HM62-T

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Fenix HM62-T review

Fenix HM62-T specifications

Brand & ModelFenix HM62-T
Flashlight categoryHeadlamp
LED1*Luminus SST40, 2*2835 red LEDs
Max. output1200 lumens
Max. beam distance150 meters
Max. beam intensity5590 cd
Battery config.1*18650, 2*CR123A, 2*16340
Onboard chargingNone
Main modes4
BlinkiesFlasher (red LED)
Review publication dateJune 2024

Review intro:

Anyone who’s ever been to a big box sporting goods store has probably encountered the brand representing our review today because they’re one of the few manufacturers featured here on 1Lumen with a solid global retail presence. I’m of course referring to Fenix Lighting LLC based in Littleton, Colorado. Fenix makes a ton of light-emitting products: Bike lights, flashlights, tac lights, and headlamps, big, small, and tiny. Basically something for every possible lighting need. If Fenix doesn’t have it then Houston, we have a problem.

Seriously, I’ve reviewed a bunch of Fenix gear, and the consensus is clear: You get a nice, high quality product that will last a long time and more importantly, turn on every time when you click the switch. Up for review today is something new; a headlamp no less, and part of the HM series general purpose headlamps. The Fenix HM62-T is designed for walkabout activities and is advertised as lightweight, compact, and comfortable to wear. There’s also some new features on this one (at least for me), so I’m looking forward to it!

What’s in the package

The HM62-T came in a typical Fenix retail-ready package with a clear ‘window’ that shows the front of the headlamp. There’s an obligatory hang tag as well and the box has the typical Fenix-esque orange and black color scheme with feature blurbs. Here’s what you get:

  • Fenix HM62-T headlamp
  • Fenix ARB-L18-3400U V2 3400 mAh 18650 (loaded in the tube)
  • USB C charging cable
  • O-ring
  • User manual

This kit is ready to run (literally). The cell was sufficiently charged to provide near-max output without being an unsafe storage voltage (sitting at about 3.7 volts). Just unscrew the tailcap and remove the isolator and you’re good to go. The charging cable is pretty flimsy and short, but at least it’s there, and it’s nice to see a wear item included (o-ring).

Flashlight in use, Build Quality, and Warranty

The Fenix HM62-T is a single 18650 size T-type headlamp designed for activities like running, jogging, biking, or hiking, but you can use it for just about anything. It’s compact and exceptionally light weight. With a battery onboard it’s under 150 grams, which for an 18650 headlamp is pretty fantastic. It’s thanks to a brand-new design and material for the housing (more on that below). The headband features the traditional buckle adjustments, but also a one-handed rotary adjuster like you see on hard hats. Turn the dial clockwise to tighten, counterclockwise to loosen. Seriously folks, this is my new favorite headband. It’s really comfortable and easy to adjust.

The backside of the adjuster has a silicone pad for grip to keep the band from shifting and sliding down into your face, and the band itself has anti-slip pads on the inside to help hold it. There’s also reflective elements (the Fenix logo included) on the outside for visibility at night. Fenix got this one right and it is super stable even when jostled or bounced around.

Also integrated in the headband is a safety whistle. This is more than a nicitie, it’s a potentially lifesaving one! An audible signaling device is an invaluable survival tool that could save your life. We carry one on our kayak vests and everyone who goes out into the woods alone or with a group should have one. Importantly, the whistle doesn’t require a lot of airflow to get loud so if you’re injured or cold and weak, you don’t have to blow hard into it. The headband can be easily removed from the mount for cleaning. The housing itself sits in a plastic mount that rotates up or down to 90 degrees, and it’s nicely dented so it doesn’t shift out of position.

For switching, Fenix went with a single e-switch solution instead of two. The e-switch is on one end of the battery housing with a large grippy silicone boot (of course it has the Fenix logo) with a small LED indicator to one side for battery condition,charge, and on state. The switch has nice click action and is easy to manipulate even with gloved hands. 

For build quality, it’s typical Fenix stuff, so excellent fit, finish and build quality all around. You actually get some nice features for the somewhat-steep asking price of $75 (currently marked down from $102 MSRP). It’s not cheap at all, but you can’t buy quality for cheap these days. The headlamp housing is made from magnesium alloy. This keeps it super lightweight (30% lighter than a similar sized aluminum housing) without sacrificing durability or thermal properties. This is a great move since for walkabout activities with a headlamp, you want it to be as light as possible.

The machining is top-notch as well. There’s no sharp edges either, another important feature. The headband mount is made from plastic, but it seems super-sturdy ABS and unlikely to break. You get a single gold plated coil spring for the battery negative on the tailcap with a flat contact for the driver flanked with anti-reverse polarity bars. I’d have preferred a spring here since it’s a durability/reliability enhancer especially for a light geared towards active use.

The threads on the body are rectangular cut and a little fine, but didn’t have a propensity to cross-thread and were acceptably smooth. The gripping surface of the tailcap, while pretty grippy, is a bit narrow, and takes some effort to unscrew, but more lube helped here. With a fully sealed up housing and a single o-ring for the tailcap, Fenix gives the HM62-T an IP68 rating for full ingress protection from pouring rain, humidity, salt spray, immersion (up to 2 meters for 30 minutes), and drops from 2 meters.

The warranty, from Fenix is one of the best:

15 days free replacement: Fenix will replace a new product within 15 days of purchase for any manufacturing defects if problems come into being in normal use; We will replace it with the same model. If the model has been discontinued, customers will receive a product with similar or improved model. 5 years free repairs: Fenix will offer free repair within 5 years for lights from the date of purchase if problem develops with normal use. Different warranty period for different products:

• Flashlight, Headlamp, Bike Light and Camping Lantern (without a built-in battery) – 5 years (excludes rechargeable battery)

• Flashlight, Headlamp, Bike Light and Camping Lantern (with a built-in battery) – 2 years (battery included)

• Rechargeable battery, battery charger, bike mount, remote pressure switch – 1 year

Except the products and accessories listed above, other products or free offers provided by Fenix are not covered within the product’s warranty.

Limited Lifetime Warranty: For lights past the free repair warranty period, we provide lifetime repairs but will charge for parts. Fenix Lighting LLC will notify customer the cost of the part before repair. Please note, due to changing technology, not all older lights will be able to be repaired due to parts not being available. In such cases, Fenix Lighting LLC may provide a discount to the customer for the purchase of a newer model.

LED, Lens, Bezel, Beam, and Reflector

The HM62-T is sporting the prior reigning champ of high power 5050 size LEDs and it’s one that I think Fenix is essentially keeping alive: The Luminus SST40. This LED has been featured in tons of lights over the last 7 years and has only been recently superseded by Luminus’s own SFT-40-W LED for output. It’s a domed bond wire design with a low Vf and thermal resistance which lends to a high lm/W efficiency. Even with the SFT-40-W available, I still think this is a relevant LED. It’s only let down because it can’t be driven as hard as modern CSP designs and it’s limited to 5000K and 6500K low CRI tints. You still get good performance out of it though at relatively low drive currents, and is still one of the better LEDs for regulated (buck) setups. I still use it in my modded lights. 

In the HM62-T you get the 4500-5000K version, which is great for output, but the beam gets a bit green at low and even higher outputs (0.0130 duv is shifting pretty green-the beamshots corroborate that), so if it’s a nice, pure white beam you’re after, look elsewhere. Most users could care less about high CRI and rosy tints. For outdoor or general purpose use, it’s fine. There’s two SMD 2835 LEDs for the red light, and they’re situated on either side of the SST40. All LEDs share a single TIR lens. It’s a clever arrangement too and saves space on the front of the headlamp, which keeps the size down. The lens gives a nice clean beam with a balance of distance and side illumination without a sharp cutoff on the spill which is nice for dark trails with drop offs on either side! The red light is very floody, as expected, and it’s a really pure red light. 

Spectral measurements: 

I used the Opple Lightmaster Pro to measure the flashlight at 1 meter from the sensor. 

Mode:CCT:CRI Ra:duv

Dimensions and its competition


Fenix HM62-TMillimetersInches
Length82 mm3.2
Width30 mm1.2
Body diameter26 mm1

Dimensions are rounded to the nearest millimeter and the nearest tenth of an Inch.


Fenix HM62-TWeight in gramsWeight in oz
Without battery74 g2.6
With included battery125 g4.4

Weight is rounded to the nearest gram and tenth of an Oz.

Flashlight size comparison with its competition:

Group 1 left to right: Cyanky HS6R, Fenix HM62-T, Fenix HM70R

Group 2 left to right: BioLite 800 Pro, Fenix HM62-T

Group 3 left to right: Boruit D10, Fenix HM62-T

Fenix HM62-T : User Interface and Driver

Fenix uses regulated drivers for the majority of their flashlights and headlamps, and while there’s no mention of that in the manual, their included runtime graphs show nice, flat output, so I’ll say there’s one present. When you need consistent, uninterrupted output, buck or boost’s the word. 

The UI is very simple and easy to use. It’s 4 modes including Turbo for the White LED and two modes, Low, and Flash, for the red LEDs. 

Available modes White LED: 

  • Low, Medium, High Turbo

Available modes Red LED: 

  • Low, Flash

Available blinky modes:

  • Beacon Flasher (red LED only)

From OFF (White LED):

  • Press and hold: After 0.5 seconds, turns on (Main LED) in last used mode
  • Single click: Turns off
  • Double click: Turns on in Red LED mode

From ON (White LED):

  • Click the switch: Changes modes L-M-H-T-L
  • Press and hold: After 0.5 seconds, turns off
  • Press and hold for 3 seconds: Activates Lockout

From ON (Red LED):

  • Click the switch: Changes from Constant to Flashing mode
  • Press and hold: After 0.5 seconds, turns off

Mode memory:

  • Yes. Remembers the last used mode


  • None

Low voltage warning/protection:

  • The LED indicator on the switch shows battery state for 3 seconds when the headlamp is turned on, and during LVP when in operation.
  • Solid green 80%-100%,
  • flashing green 50-80%
  • solid red 20%-50%
  • flashing red 1%-20%.
  • For LVP, the output drops incrementally to Low, with 3 blinks every 5 minutes until shut down.


  • Beacon Flasher (Red LED only)

Lock-out mode: 

  • Electronic Lockout is available. To activate, from OFF, press and hold the switch for +3 seconds. The Light will blink 4 times in Low to acknowledge the lockout. Clicking the switch repeats the 4 blinks when locked. To unlock, repeat the lock procedure.


  • None visible

Additional/summary info on the UI: 

  • This is a super-simple, super user-friendly UI, like I expect from Fenix. It’s designed with the ‘normal’ user in mind, someone who’s never had a serious flashlight and may not be privy to complicated user interfaces like Anduril, NarsilM, or ArmyTek and Royvon’s concoctions. While I’m not super fond of press and hold for on, I think it works fine here and I’m not too bothered. The mode spacing is spot on with even brightness levels. Accessing the Red LEDs is also easy, and once I got over the muscle memory of double clicking and expecting Turbo, it’s not hard to master. LVP is built into the driver so pull down the output when the cell gets low, but the LVP functionality (the blinking status LED and main LED) is only available if using Fenix’s ARB-L18 battery. There’s thermal management also, set to 50 C

Fenix HM62-T Charging and batteries

The HM62-T takes an 18650 battery and Fenix includes their own ARB-L18-3400U V2 cell with the light. This is a 3400 mAh protected button top with integrated USB C charging. This is necessary since the HM62-T doesn’t have onboard charging, so you need a separate battery charger if using a battery without built-in USB charging. Not that you’d need to use a different battery though because Fenix is one of the mainstream hold outs not switching over to proprietary batteries.

The only limitation is that you must use button top cells and Fenix does warn that the LVP (notifications, not the voltage cutoff) functionality is only available when using the Fenix-supplied cell. You can also use two CR123A lithium primaries or two of Fenix’s own ARB-L16 cells (these are 16340 size batteries), but this is mainly for emergencies since you lose runtime and output (mainly on the CR123A). My Energizer CR123As fit just fine, and so did some VapCell T8s. The in-battery charging is set for 5 volts and 1.5 amps input, and my USB testers showed 5 volts and 1.1 amps for about 5.5 watts. The battery was charged in 2 hours 40 minutes after a runtime.

Charge typeFitsNo fitCharge time
None (integrated on battery)Single 18560 or two CR123A or 16340 li-ion cells. Button tops (standard and protected, with and without integrated charging)Flat top cells2h 40min

Performance test

Lumen measurements

How Lumens are Measured: Understanding ANSI FL1 Standards How Lumens are Measured: Understanding ANSI FL1 Standards: The ANSI FL1 standards specify that output in lumens should be measured 30 seconds after turning on, as this is the standardized time for measuring brightness according to the industry standard. This is why we focus on this part in our measurements. The ANSI FL1 standards require an ambient temperature of 22 ± 3°C. We record the ambient the ambient temperature to identify potential reasons for any observed discrepancies.

Lumens are measured in my 50 cm integrating sphere with a Digi-Sense 20250-00 data logging luxmeter. The sphere has been calibrated with a Convoy S2+ measured to 260 Lumens and the figures are within 10% of actual. I use a Thisinde B18B+ multimeter with 14 gauge leads on banana plugs in the meter for low current and my FY219 clamp meter with a short loop of 12 gauge wire for current over 200 mA. The test was conducted with the fully charged Fenix ARB-L18-3400U V2 battery.

ModeAmps at startSpecifiedTurn on30 sec.10 min.
Low60 mA54.24.2
Medium220 mA130137137
High650 mA400408408400
Turbo3.14 A1200 lm1228 lm1170 lm451 lm
Red Low38 mA588

Ambient temperature during testing:

  • 19.5 °C 

Parasitic drain:

  • .01 mA

The standby current at the tailcap is very low, but remember the built-in PCB on the battery will also have quiescent current also. The outputs track the factory specification pretty closely and that’s always nice. I expect that from Fenix though as an upper-level brand. The red LED output comes in higher than the Low white LED though.

Fenix HM62-T Battery Life: Runtime graphs

How Runtimes are Measured: Understanding ANSI FL1 Standards About ANSI FL1 runtime standards: The runtime is measured until the light drops to 10% of its initial output (30 seconds after turning on). This does not mean that the flashlight is not usable anymore. The last column shows how long the light actually works till it shuts off. If there is a + symbol, it means that the test was stopped at that particular point, but the light was actually still running. This happens on certain occasions, with certain drivers, firmware, or batteries.

Lumens are measured in my 50 cm integrating sphere with a Digi-Sense 20250-00 data logging luxmeter. The sphere has been calibrated with a Convoy S2+ measured to 260 Lumens and the figures are 5% to 10% of actual. I use a Digi-Sense 20250-92 data logging thermocouple for the temperature measurements. The probe is affixed to the head using kapton tape and uses the same 5 second sampling rate for logging. I tested High and Turbo modes. I used the included Fenix ARB-L18-3400U V2 battery, which was fully charged before each test.

ModeSpecifiedRuntime (ANSI FL1)Time till shut off
High12h11h 28min15h 24min+
Turbo4h3h 45min4h 28min+

The runtimes look awesome. The output for the Turbo and High modes is laminar after their respective stepdowns. Turbo steps down gradually from 1200+ Lumens at start down to under 1000 Lumens by 2 minutes in, settling down to about 400 Lumens after 10 minutes, so you get better than 1000 Lumens for 2 minutes and better than 500 Lumens for 7 minutes with sustained output over 200 Lumens for the next 3 hours 30 minutes. The LVP step down drops the output to around 15 Lumens which was maintained until I ended the test.

I didn’t notice the LVP notifications though. High starts at a hair over 400 Lumens, and maintains that for 10 minutes until stepping down to around 200 Lumens, which it maintains for another 11+ hours until the LVP steps down to what looks like Low mode. I let it run for another 3 hours until I ended the test. The light was still usable after the tests at lower output. The battery was discharged to 2.9 volts after the rest. Temps were kept well in check, never rising over 50 C for the entirety of both tests.

For the comparison graph, I compared the HM62-T against the spotlight modes of some other Fenix headlamps (the flagship HM70 series L and T shaped models), the Cyansky L and T-shaped HS series (6R and 7R), and my current favorite headlamp BioLite 800 Pro. The HM71R and HS7R have the Luminus SFT-70-W for their spot LEDs, so they obviously blow the SST40 HM70R and HM62-T, SST20 HS6R, and XP-L (?) equipped BioLite away for output, but the small, light HM62-T holds its own.

Peak beam intensity and beam distance measurements

About Peak beam intensity: Understanding ANSI FL1 Standards About peak beam intensity The calculated value of distance in meters at which the flashlight produces a light intensity of 0.25 lux. (0.25 lux is about the brightness of a full moon shining on an object). This means that the intensity has decreased so much, it becomes difficult to see darker objects, or objects that don’t reflect light. The columns ‘Meters’ and ‘Yards’ use rounded numbers.

Beam distances are measured using a Uni-T UT383S luxmeter measured indoors at 5 meters using a fully charged Fenix ARB-L18-3400U V2 battery. Measurements taken at 30 seconds. .

ModeSpecifiedCandela measured MetersYards
Low15 cd25 cd1011
Medium509500 cd4549
High15771675 cd8188
Turbo5590 cd5525 cd149 m163 yd
Red Low15N/AN/AN/A

Ambient temperature:

  •  19.8 °C 

No reading for the red LED this time (too dim at 5 meters), but the others look good.


Camera settings and distance: Photos taken with a Canon EOS R100 with Canon RF-S 18-45 mm STM lens. The fence is 45 meters distant and the camera is set to 0.3s, F5 ISO1600 and 5000K WB. I tested the highest modes for the spot LED on the headlamps with dual LEDs (spot/flood).

Beamshots of the following headlamps compared:

  • Fenix HM62-T
  • Fenix HM71R
  • Fenix HM70R
  • Cyansky HS6R
  • Cyansky HS7R
  • BioLite 800 Pro (burst mode)

Please note that the following beamshots are mainly intended to showcase the beam pattern and beam quality, rather than overall performance. These images are typically taken directly after activation, and in different seasons or weather conditions, and therefore do not fully represent its overall performance. For accurate performance metrics, such as output, beam distance, and runtimes, you need to look at the performance section of this review.

Disclaimer: This flashlight was sent to us for review at no cost by Fenix Lighting US. We have not been paid to review, nor have we been holding back on problems or defects.

Final Verdict


  1. Regulated output
  2. Very lightweight
  3. Very good sustained output
  4. Easy to adjust, comfortable headband with built-in safety whistle
  5. Can use a variety of li-ion batteries


  1. Limited to button top batteries
  2. Press and hold for on/off and double-click for the red light mode
  3. No onboard charging

Explanation on star ratings:

1: Avoid: a match would be a better choice – 2: Poor: significant defect or issues; almost unusable – 3: Average: some defects or issues; but still usable 4: Good: recommended (minor issues) – 5: Great: highly recommended

Reviewer Nick

4.5 stars: ★★★★⋆

While our star rating provides a reliable indicator, we encourage you to read the full review to make an informed decision based on your own needs and preferences.

I have come to count on Fenix to deliver great lights with high performance that are also easy to use with innovative features, and they don’t disappoint with this new HM62-T headlamp.

In short, it’s great! I really like single 18650-size T-shaped headlamps, but the one complaint that dogs pretty much every headlamp I’ve tested (save for the BioLite 800 Pro) is the headband. It’s either difficult to adjust, loosens up over time so the headlamp slides down over my face, or is just uncomfortable to wear. The HM62-T solves all that in one fell swoop with their one-handed headband adjuster. Not only is the headband comfortable and easy to use, it can also potentially save your life with the built-in safety whistle. Aside from that, the rest of the headlamp is fantastic. It gets pretty bright and maintains high brightness for a good while, and has fully regulated output. It’s a good deal of light in a small, lightweight package.

While I wasn’t crazy about press and hold for on/off and a double click for the red light, the UI is well sorted out and easy to use with a one-button solution. I love how Fenix also lets you use your own batteries (albeit button top only) too, not just a single 18650, but the versatility to use two CR123A or two 16340s in a pinch. Brilliant. The only other issue I could find? No onboard charging, which isn’t a deal breaker since the included battery has onboard charging. It’s only a drawback if you like to swap cells with standard batteries. If you do, you need button tops and a battery charger.

Overall, this is probably one of the better 18650 size headlamp options for 2024. It’s a solid, all-around great performer that’s lightweight, bright, and super versatile. 4.5 stars for the HM62-T.

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