Imalent MR90 Flashlight Review

Imalent MR90 Flashlight Review

The Imalent MR90 flashlight boasts 50,000 lumens, has a built-in battery, and emitters for both flood and throw. Read on for testing!


Official Specs and Features

Here’s a link to the Imalent MR90 flashlight product page.

Versions

As far as I can tell, there’s just one version of the Imalent MR90 flashlight. Imalent often does end up releasing a “W” (warm) version, but I don’t see that (yet?)

Price

The MSRP of the Imalent MR90 flashlight is $359.95.


Short Review

This is certainly an impressive light! I’ll add that it gets hot! You probably expect this, but you should be aware going in that it really gets quite hot. The output is impressive, and having built-in flood and throw options is fun, too!

Long Review

The Big Table

Imalent MR90 Flashlight
Emitter: Luminus SBT90.2 and Cree XHP70.2 (8) (Both)
Price in USD at publication time: $359.95
Cell: Internal
Turbo Runtime Graph High Runtime Graph
LVP? Shuts off at very low voltage (may be electronic shutoff, unsure)
Switch Type: E-Switch
Quiescent Current (mA): ?
On-Board Charging? Yes
Charge Port Type: Barrel Connector
Power off Charge Port
Claimed Lumens (lm) 50000
Measured Lumens (at 30s) 27410 (54.8% of claim)^
Candela per Lumen 25.6
Claimed Throw (m) 1391
Candela (Calculated) in cd (at 30s) 5190lux @ 6.205m = 199826cd
Throw (Calculated) (m) 894.0 (64.3% of claim)^
Claimed CCT
Measured CCT Range (K) 5600-6800 Kelvin
Item provided for review by: Imalent
All my Imalent reviews!
Imalent MR90 Flashlight
Emitter: Cree XHP70.2 (8) (Flood)
Price in USD at publication time: $359.95
Cell: Internal
Turbo Runtime Graph High Runtime Graph
LVP? Shuts off at very low voltage (may be electronic shutoff, unsure)
Quiescent Current (mA): ?
Claimed Lumens (lm) 44500
Measured Lumens (at 30s) 24805 (55.7% of claim)^
Candela per Lumen 2.5
Claimed Throw (m) 692
Candela (Calculated) in cd (at 30s) 2510lux @ 5.281m = 70001cd
Throw (Calculated) (m) 529.2 (76.5% of claim)^
Claimed CCT
Measured CCT Range (K) 6000-6600 Kelvin
Item provided for review by: Imalent
All my Imalent reviews!
Imalent MR90 Flashlight
Emitter: Luminus SBT90.2 (Throw)
Price in USD at publication time: $359.95
Cell: Internal
Turbo Runtime Graph High Runtime Graph
Claimed Lumens (lm) 4500
Measured Lumens (at 30s) 3384 (75.2% of claim)^
Candela per Lumen 85.5
Claimed Throw (m) 1586
Candela (Calculated) in cd (at 30s) 6230lux @ 6.394m = 254703cd
Throw (Calculated) (m) 1009.4 (63.6% of claim)^
Claimed CCT
Measured CCT Range (K) 5600-7200 Kelvin
Item provided for review by: Imalent
All my Imalent reviews!

^ Measurement disclaimer:  I am an amateur flashlight reviewer.  I don’t have $10,000 or even $1,000 worth of testing equipment.  I test output and such in PVC tubes!!  Please consider claims within 10% of what I measure to be perfectly reasonable (accurate, even).

What’s Included

Imalent MR90 flashlight what's included

  • Imalent MR90 flashlight
  • Charging wall wart
  • Lanyard
  • Nylon pouch
  • Spare o-rings (2)
  • Manual

Package and Manual

Imalent MR90 flashlight package Imalent MR90 flashlight package Imalent MR90 flashlight package Imalent MR90 flashlight lens cover Imalent MR90 flashlight battery cover

Imalent MR90 flashlight manual

Build Quality and Disassembly

Imalent MR90 flashlight

Imalent is continuing what I’d call the “M” series design language. This light has built-in fans and not the kind that attach via a separate connector. These fans are permanently built into the head (or “neck”) area of the MR90. It’s very much like we saw on the MS12 Mini!

One thing I realized when testing this light is that all of the branding is on this little screw-in tailpiece. This piece covers the charging port, and in fact, must be removed when charging. These pieces are the same as other similar lights (like the MS12 Mini) and can be swapped between the at will. Not that you’d want to do that, but you might specifically want to not do that in case you forget which light is which name.

Imalent MR90 flashlight tailcap

Size and Comps

MEASUREMENTS: 92mm (head diameter) *56mm (body diameter) *152mm (length)

WEIGHT: 898g(battery excluded)

If the flashlight will headstand, I’ll show it here (usually the third photo).  If the flashlight will tailstand, I’ll show that here, too (usually the fourth photo).

Imalent MR90 flashlight in hand

Here’s the test light with the venerable Convoy S2+.  Mine’s a custom “baked” edition Nichia 219b triple.  A very nice 18650 light.

And here’s the light beside my custom engraved TorchLAB BOSS 35, an 18350 light.  I reviewed the aluminum version of that light in both 35 and 70 formats.

Retention and Carry

Two ways are included for carry of the Imalent MR90 flashlight.  First, we can talk about the lanyard.  Maybe it’s more of a wrist strap. Either way, it can connect to the tailcap.

Imalent MR90 flashlight lanyard

A nylon pouch is also included. This pouch allows only one-direction installation, and the tailcap hangs out the bottom.

Imalent MR90 flashlight nylon pouch

Imalent MR90 flashlight tailcap slots

Power and Runtime

The Imalent MR90 flashlight runs on a “4000mAh 21700 Li-ion battery pack” which ships covered with this little plastic shield.

Imalent MR90 flashlight battery Imalent MR90 flashlight battery

Here are a few runtime tests.  The light does shut off when voltage is low, and when the light shuts off so do the fans. You can see what happens when the fans go off, too – the temperature shoots up a bit. That’s expected and is also a testament to how much cooling they are providing.

Imalent MR90 flashlight runtime graph Imalent MR90 flashlight runtime graph Imalent MR90 flashlight runtime graph Imalent MR90 flashlight runtime graph Imalent MR90 flashlight runtime graph Imalent MR90 flashlight runtime graph Imalent MR90 flashlight runtime graph

I also performed a flood test without cooling where I saw sustained 80°C temperatures. That’s significant heat. So much so in fact, that it can be somewhat of a decision on how you’ll access the switch to turn the light off… Maybe good planning is required for that. I will say that the lumens held very steady this way, though. It was impressive! Unfortunately, I mis-hit the record button and only captured the temperature…

Charging

The Imalent MR90 flashlight has built-in charging. There’s a charge port in the tail end, covered by the metal disk we talked about above.

Imalent MR90 flashlight charging port

A wall wart is included. This is in fact the same as the charger used with the MS12 Mini.

Imalent MR90 flashlight wall wart

This wall wart outputs 19V up to 2A.

Imalent MR90 flashlight wall wart

I am not able to log charge cycles for this type of connector, but a couple of tests indicate it charges fully in around 2 hours to 2h 15m.  Quick!

When charging, a LED beside the charge port is red. When charging is complete this LED turns green.

Modes and Currents

The manual is a bit weird in listing the modes for this light. It seems that the output claims are made mainly for when BOTH emitters are on. That’s fine, but probably mischaracterizes how most users will use the light. I won’t make claims that Imalent doesn’t, but just know that each output option (flood vs throw) can be used throughout the range of outputs. For example, each of 3 options has 6 modes each. You’ll see that more clearly below, I think.

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps @16.8V
Turbo 50,000 + 10,000 50s +45m Initial:
30s:
>18
High 30,000 + 10,000 3m + 45m Initial:
30s:
17.3
Middle II 18,000 + 10,000 20m + 25m Initial:
30s:
9.00
Middle I 10,000 52m Initial:
30s:
4.72
Middle Low 6,500 1h30m Initial:
30s:
2.92
Low 2,500 4h Initial:
30s:
1.25
Spot 4,500 2h30m Initial:
30s:
6.32
Flood 44,500 1h Initial:
30s:
>18

Pulse Width Modulation

All the modes are the same (thus it doesn’t really matter what the order is from top to bottom). Left to right is lowest to highest. What you see isn’t really PWM, it’s a not-to-baseline sawtooth that you’ll never notice during use.

For reference, here’s a baseline shot, with all the room lights off and almost nothing hitting the sensor.  Also, here’s the light with the worst PWM I could find.  I’m adding multiple timescales, so it’ll be easier to compare to the test light.  Unfortunately, the PWM on this light is so bad that it doesn’t even work with my normal scale, with is 50 microseconds (50us).  10ms5ms2ms1ms0.5ms0.2ms.  In a display faster than 0.2ms or so, the on/off cycle is more than one screen, so it’d just (very incorrectly) look like a flat line.  I wrote more about this Ultrafire WF-602C flashlight and explained a little about PWM too.

User Interface and Operation

There’s one switch on the Imalent MR90 flashlight. It’s an e-switch and is very much like many other similar Imalent flashlights.  It’s an e-switch on the head.  The switch is “textured” and has a nice positive clicky action.

Imalent MR90 flashlight e-switch Imalent MR90 flashlight e-switch actuation

Here’s a UI table!

State Action Result
Off Click On (Mode Memory (excluding Turbo/Strobe)
On Click Off
On Hold Mode cycle (low to high order)
Any Double Click Turbo
Turbo Double Click Strobe
Off Hold 3s Manually turn on (or off) the cooling fans
Off Click 4x Iterate Lock (indicated by switch indicator light blinking a few times)
On Triple Click Output selection advance: Both > Spot > Flood

Unfortunately, we lose the “Triple click to Low from Off” option on the Imalent MR90 flashlight. That’s disappointing – it’s all Mode Memory now.

LED and Beam

There are two output options on the Imalent MR90 flashlight. There’s a single throw emitter – a Luminus SBT90.2. And the flood option is eight (8) Cree XHP70.2 emitters.

LED Color Report (CRI and CCT)

The CCT is just sort of “cool” and only gets “very cool” on the highest outputs of the throw emitter.  CRI is low to lowish, too.

Beamshots

These beamshots are always with the following settings:  f8, ISO100, 0.3s shutter, and manual 5000K exposure.

Tint vs BLF-348 (KillzoneFlashlights.com 219b version) (affiliate link)

I keep the test flashlight on the left, and the BLF-348 reference flashlight on the right.

I compare everything to the KillzoneFlashlights.com 219b BLF-348 because it’s inexpensive and has the best tint!

Conclusion

What I like

  • Massive output
  • Very good throw
  • Wide range of throw and flood options
  • Mostly good user interface
  • Very quick charging

What I don’t like

  • Can’t start in Low directly
  • Light gets so hot that it’s probably a danger to users who are not careful
  • Charging is via barrel plug and not USB-C (would really like to see a move to USB-C!)

Notes

  • This content originally appeared at zeroair.org.  Please visit there for the best experience!
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1 thought on “Imalent MR90 Flashlight Review”

  1. thanx for detailed review
    btw, your pics are way better then some time ago. well done.

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