FireFlyLite E01 Luminus SST-40 21700 Flashlight Review

fireflylite e01 luminus sst-40 21700 on side main pic

There’s a new US based seller of FireFly lights – FireFlyLite.US.  This is a big change, since they’ll be handling warranty work too.  Along with this change comes a change in name of the FireFly brand – it’s now FireFlyLite.  They set an E01, and based on some news I’ve handled over at PhotonPhreaks.com, they have some very interesting lights upcoming!  Read on for a review of the E01 they sent to me.


Official Specs and Features

Here’s a link to the official product page.

Versions

There’s really just one version of the E01 but it’s available in two different finishes.  There’s Matte Black, and “Silver” (seen here).  “Silver” is really clear anodized aluminum.

Price

These are selling for $49.99 right now at BraynGear.com (affiliate link).  (That includes a 21700 cell and charger, too!!)  The price gets you into the free shipping tier.  And it ships from the US, so there’s no long wait!


Short Review

I really liked the FireFlyLite E07, and this one is similar enough to be enjoyable in the same way.  They’re very different lights though and compliment each other well.  This is a good mix of “EDC” and “throw” and I have to tell you, I love the clear anno finish.  Love it.

Long Review

The Big Table

FireFlyLite E01
Emitter: Luminus SST-40 (NW 5700K)
Price in USD at publication time: $49.99 at BraynGear.com (affiliate link)
Cell: 1×21700
Turbo Runtime High Runtime
LVP? Yes
Switch Type: E-Switch
Quiescent Current (A): 0.00009
On-Board Charging? Yes
Charge Port Type: micro-USB (separate charger)
Chargetime
Power off Charge Port with no cell?
Claimed Lumens (lm) 2300
Measured Lumens (at 30s) 1702 (74% of claim)*
Candela per Lumen 20.2
Claimed Throw (m)
Candela (Calculated) in cd (at 30s) 1021lux @ 5.988m = 36609cd
Throw (Calculated) (m) 382.7
All my FireFlyLite 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

fireflylite e01 luminus sst-40 21700 what's included

  • FireFlyLite E01 Flashlight
  • 21700 to 18650 adapter (the black part and the little brass button at left)
  • Spare o-rings (2)
  • Pocket clip
  • Pocket sized Andúril User Interface graphic
  • XTAR MC1S single bay micro-USB charger
  • 10A 4800mAh 21700 (not pictured)

Package and Manual

fireflylite e01 luminus sst-40 21700 box

fireflylite e01 luminus sst-40 21700 box top

There’s a manual included in the form of this:

It’s a nice little laminated card, with English (as seen above) on one side, and Chinese on the other.  I guess this was my first time seeing the Chinese version of the Andúril diagram.

Build Quality and Disassembly

fireflylite e01 luminus sst-40 21700 on side main pic

Alright, you probably didn’t buy this light without having experienced clear anodized aluminum before….  So you already know that it’s awesome.  I love it.  Not only does it have a great feel in-hand, but the threads on these lights are so smooth.

I don’t know it for certain, but I think this bezel is aluminum.  I wouldn’t have been surprised to see a stainless bezel on here, but it looks and feels aluminum.

fireflylite e01 luminus sst-40 21700 front with switch

There is minimal branding, and even that branding is fairly faint.  It feels laser etched.

fireflylite e01 luminus sst-40 21700 standing with logo

The switch has backlight function, too!

fireflylite e01 luminus sst-40 21700 standing front with switch

What you see below isn’t so much “knurling” as just a milled pattern on the body.  It’s adequate for added grip, and well finished.

fireflylite e01 luminus sst-40 21700 knurling and body

The tailcap also provides adequate grip for removal.  Again, these threads are so smooth that it wouldn’t really matter if the tailcap was blank.

fireflylite e01 luminus sst-40 21700 tailcap

The head has some grooves that to me look remarkably like tritium slots.  These would be long slots, and what an interesting addition to the light!

fireflylite e01 luminus sst-40 21700 side of head potential trit slot

The head has big and deep cooling fins.  Also note that these cooling fins don’t have sharp corners.  They’re beveled just a touch, which means they won’t hurt to grab.

fireflylite e01 luminus sst-40 21700 cooling fins

This little bit among the cooling fins is the lanyard hole.  More on that later.

fireflylite e01 luminus sst-40 21700 showing lanyard hole

fireflylite e01 luminus sst-40 21700 pocket clip attached

fireflylite e01 luminus sst-40 21700 pocket clip hole

fireflylite e01 luminus sst-40 21700 switch lit purple

The threads on the tail end are anodized (clear!), square, smooth, and a bit long.

fireflylite e01 luminus sst-40 21700 disassembled tailcap threads

The tailcap has a nice big beefy spring.

fireflylite e01 luminus sst-40 21700 disassembled tailcap

The cell tube is completely removable, but is not reversible.  This does mean that the clip, which fits on the tail end, fits only on the tail end.  The ends of this cell tube are threaded differently – you won’t install it improperly.

fireflylite e01 luminus sst-40 21700 disassembled cell tube

The head end also has a nice beefy spring, which has the spring bypass mod already done.  I’m no flasher, but I’m fairly sure those 7 little dots on the head end at the 7 o’clock position are exposed programming pads, too.  So if you wish to reprogram the E01, you can do so without any disassembly at all!

fireflylite e01 luminus sst-40 21700 disassembled head spring tail spring

fireflylite e01 luminus sst-40 21700 disassembled with cell

fireflylite e01 luminus sst-40 21700 18650 adapter

fireflylite e01 luminus sst-40 21700 emitter and bezel

Here’s the other bit of laser etch branding.  It includes a serial number!

fireflylite e01 luminus sst-40 21700 tailcap

fireflylite e01 luminus sst-40 21700 tailstanding

Size and Comps

Size: 120mm (L)x 34mm(Head) x 26mm(Body)
Net Weight: 96 gram

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

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 format.

fireflylite e01 luminus sst-40 21700 size with torchlab boss 35

Finally, here’s the E07 beside the E01.

Retention and Carry

Included, but not installed by default, is a pocket clip.  It’s a friction clip, and only fits on the tail end of the light – bezel down carry.  It’s not a deep carry clip, but proportionally not a bad placement.

The clip has a couple of places for a lanyard to attach.  First in the side of the clip.

fireflylite e01 luminus sst-40 21700 pocket clip lanyard slots

And secondly, in the tip of the clip.

fireflylite e01 luminus sst-40 21700 pocket clip hole

There’s another place for a lanyard to attach, too:

Right there amongst the cooling fins is a tiny hole suitable for a lanyard.  Reminder: a lanyard is not included.

Power and Runtime

The E01 is powered by a single 21700 cell.  Any type will work: flat or button, protected or unprotected.  But the cell needs to be of the shorter variety – there are some button top 21700s that won’t make contact right.  The right type cell is included anyway, so it’s not something you’ll need to worry about.  Included is a 10A 4800mAh 21700 (similar to the Samsung 48G) (not what is pictured below!)

Don’t use an extremely high discharge capable cell in this light!  There’s just one emitter and you can damage this emitter with too much current!  (“Too much” is probably anything over 10A or so.)

fireflylite e01 luminus sst-40 21700 disassembled with cell

FireFlyLite also includes a 21700 to 18650 adapter.  There’s a little brass button in there, too.

Here are a couple of runtimes: Turbo and High.  Turbo is the “double click from on” Turbo (which is the full FET output).  And “High” is the “highest mode in the stepped group.”

This isn’t a charger review, but I went ahead and logged the charging done by this XTAR MC1S, which is included.  It’s a simple single bay charger, and works adequately.

Modes and Currents

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps
8 2300 1702 8.83
7 1126 2.33
6 1.35
5 1.06
4 0.49
3 0.19
2 0.04
1 3.5mA

PWM

The first mode (at left) is the lowest of the ramping UI section.  The rest are the stepped modes (in order low to high).  You can also note from this, that the lowest mode of the ramping UI is lower than the lowest stepped option.

For reference, here’s a baseline shot, with all the room lights off and almost nothing hitting the sensor.  And here’s the worst PWM light I have ever owned.  Also one of the very first lights I ordered directly from China!

User Interface and Operation

There’s one switch on the E01.  It’s a side e-switch, with four purple indicating LEDs.  It’s quiet, but very clicky, and the rubber cover is nice and grippy.

This light ships with Andúril by ToyKeeper.  Andúril is a fantastic UI, and extremely versatile!

fireflylite e01 luminus sst-40 21700 standing front with switch

In the photo below, the switch emitters (4) are actually lit.

fireflylite e01 luminus sst-40 21700 switch lit purple

And here’s a night shot of the same.

fireflylite e01 luminus sst-40 21700 beamshot switch at dark

First off, here’s the UI chart made by ToyKeeper.

Here’s my UI table!

State Action Result
Off Hold On (Low)
Off Click On (Mode Memory)
Off Click 2x Highest Hybrid Mode
Off Click 3x Blinkie Mode Group
Off Click 4x Lockout
Off Click 5x Momentary
Off Click 6x Muggle
Off Click, Click, Hold Strobe Group (Mode Memory Strobe)
Strobe Group Click 2x Strobe Cycle (Candle > Bike Flasher > Party Strobe > Tactical Strobe > Lightning Storm)
Blinkie Mode Group Click 2x Blinke Cycle (Sunset > Beacon > TempCheck > BattCheck)
On Click 3x Switch between Stepped and Smooth Ramp
On Click 4x Ramp Configuration
TempCheck Click 4x Thermal Configuration
Beacon Click 4x Beacon Configuration
Lockout Click 4x Off
Strobe Group Click Off
(Basically) On Click Off
Candle Click 3x 30 minute timer to off
Strobe Group Hold Heighten selected mode (Make faster or brighter)
Strobe Group Click, Hold Lessen selected mode (Make slower or dimmer)
On Click 2x FET Turbo
Ramp Configuration [Wait for Single flash] Click N time for level N. Selection of the “Low” you like best by clicking 1, 2, 3, etc. where 1, 2, 3, etc are different levels of low.
Ramp Configuration [Wait for Second flash] Click N time for 1+Turbo-N. Selection of the “Ceiling” you like best by clicking 1, 2, 3, etc. where 1, 2, 3, etc are different Ceiling levels.
Ramp Configuration [Wait for Third flash] Click for how many steps you want in Stepped mode. Sets Number of Steps.
Thermal Configuration [Wait for First flash] Click for N times for N degrees C. Displays Current Temperature.
Thermal Configuration [Wait for Second flash] Click for N times for 30C + N. Sets Temperature Limit.
Beacon Configuration [Wait for First flash] Click for N times N seconds per flash Sets Beacon Speed.

LED and Beam

The FireFlyLite E01 Luminus flashlight utilizes one main emitter in the E01.  (In fact you could have guessed the “01” refers to one emitter, just like in the E07, the “07” refers to 7 emitters.)  This emitter in the E01 is a Luminus SST-40 in “NW” but specifically 5700K.  That emitter is under a TIR.

fireflylite e01 luminus sst-40 21700 emitter and bezel

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)

Test light is on the left!

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

Conclusion

What I like

  • Good performance
  • The clear anodizing is great!
  • Tritium slots tucked away on the head?
  • Andúril user interface

What I don’t like

  • I don’t really need a crenelated bezel on this light
  • The 5700K temperature comes with a bit of green.

Notes

  • This light was provided by BraynGear.com for review. I was not paid to write this review.
  • This content originally appeared at zeroair.org.  Please visit there for the best experience!
  • For flashlight related patches, stickers, and gear, head over to PhotonPhreaks, another site where I write!
  • Use my amazon.com referral link if you’re willing to help support making more reviews like this one!
  • Consider making a donation to help support this site and my work!

Author: zeroair

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