Lumintop GTA Flashlight Review

Lumintop GTA Flashlight Review

Lumintop has released the GTA, a thrower of a flashlight in the form of a Tool AA. It runs on both AA and 14500 cells, and is very throwy!


Official Specs and Features

Here’s a link to the Lumintop GTA flashlight product page.

Versions

As far as I can tell there is only one version.

Price

The Lumintop GTA flashlights are selling for $34.95 without a 14500 cell.  With a 14500 cell, the price jumps to $45.95.  I’d probably just grab a cell or two elsewhere – that 14500 price seems a bit high.

However, at NealsGadgets.com the price with cell is only $41.95, so a better overall price than from Lumintop Direct.  Get the Lumintop GTA with Vapcell at NealsGadgets.com.


Short Review

This light is basically a Lumintop Tool with a thrower head.  It’s great for that!  The Tool AA 2.0 has a great size, and this GTA does as well.  Not only that, but the GTA (like the Tool 2.0!) supports AA (1.5V) and lithium-ion (4.2V) cells.

Long Review

The Big Table

Lumintop GTA
Emitter: OSRAM KW.CSLNM1.TG
Price in USD at publication time: $34.95.  These are available at NealsGadgets.com.
Cell: 1×14500
Turbo Runtime Graph High Runtime Graph
LVP? Yes
Switch Type: Mechanical
On-Board Charging? No
Claimed Lumens (lm) 550
Measured Lumens (at 30s) 424 (77.1% of claim)^
Candela per Lumen 228.8
Claimed Throw (m) 585
Candela (Calculated) in cd (at 30s) 3010lux @ 5.164m = 80267cd
Throw (Calculated) (m) 566.6 (96.9% of claim)^
Claimed CCT
Measured CCT Range (K) 7000-7200 Kelvin
Item provided for review by: NealsGadgets.com
All my Lumintop reviews!
Lumintop GTA
Emitter: OSRAM KW.CSLNM1.TG
Price in USD at publication time: $34.95.  These are available at NealsGadgets.com.
Cell: 1xAA
Turbo Runtime Graph High Runtime Graph
LVP? Not really
Switch Type: Mechanical
On-Board Charging? No
Claimed Lumens (lm) 240
Measured Lumens (at 30s) 252 (105% of claim)^
Candela per Lumen 214.3
Claimed Throw (m)
Candela (Calculated) in cd (at 30s) 1435lux @ 5.206m = 38892cd
Throw (Calculated) (m) 394.4
Claimed CCT
Measured CCT Range (K) 6200-6700 Kelvin
Item provided for review by: NealsGadgets.com
All my Lumintop 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

Lumintop GTA flashlight what's included

  • Lumintop GTA
  • Lanyard
  • Manual

Package and Manual

Lumintop GTA flashlight box

Build Quality and Disassembly

Lumintop GTA flashlight feature photo

Build quality here on the Lumintop GTA is much like we see on something like the Tool 2.0.  It’s good, and certainly “good enough” for $35.

The head has deep and thin cooling fins, and with this small body handling over 4A in some cases, that’s a good thing.

Lumintop GTA flashlight cooling fins

The bezel is knurled.  Since you don’t really ever need to unscrew the bezel, this seems like extra knurling to me.  But it’s definitely not bad.

Lumintop GTA flashlight bezel knurling Lumintop GTA flashlight tailcap

Both the head and tail are removable.

Lumintop GTA flashlight head and tail removed

Below you can see the long spring in the tailcap.  The head has only a little brass button (no spring), but this shouldn’t be an issue.

Lumintop GTA flashlight head contacts

 

Size and Comps

Size 36mm x 19mm x 113mm

Net weight 60g (aluminum)

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).

Lumintop GTA 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.

Lumintop GTA flashlight beside torchlab boss 35

To further the association between the GTA and the Tool AA 2.0, here they are side by side.

Lumintop GTA flashlight beside tool AA 2.0

The parts are interchangeable.  One difference is that the Tool has a tail switch with backlighting (when used with a 14500). The GTA does not offer that.  (But the lighted tailswitch from the Tool does work on the GTA when a 14500 is installed.)

Lumintop GTA flashlight panda with Lumintop GTA flashlight tool AA 2.0

Retention and Carry

Lumintop uses their standard pocket clip on the GTA.  The clip is friction fit and has holes into which a lanyard (included) may be attached.

Lumintop GTA flashlight pocket clip

It’s nothing special, but then you probably won’t be carrying this light (with its big head) in pocket-carry style anyway.

Lumintop GTA flashlight pocket clip hug

Also included is a lanyard.  That lanyard attaches through one of these two holes in the tailcap.  It can also attach in the pocket clip hole if you’re brave enough to trust the connection to the friction fit security of the pocket clip.

Lumintop GTA flashlight tailcap lanyard holes

Lumintop GTA flashlight lanyard installed Lumintop GTA flashlight lanyard installed

Power and Runtime

The Lumintop GTA can be powered by AA-sized cells, of all available chemistry.  That is primary alkaline cells, NiMH cells (aka Eneloops), or 14500 cells.  I tested the light with the two cells below.  Note that those are both button tops – button tops are required!  

Lumintop GTA flashlight with AA and 14500 cells Lumintop GTA flashlight cell installed

The cell goes into the GTA in the usual way – positive terminal toward the head.

Here are some runtime graphs.

 

Modes and Currents

Lithium-ion output levels:

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps (@4.2V)
Turbo 550 45m 424 2.31
High 230 1h40m 216 0.93
Medium 55 6h 52 0.21
Low 10 48h 10 0.04

1.5V current levels:

Mode Mode Claimed Output (lm) Claimed Runtime (for NiMH) Measured Lumens Tailcap Amps (@1.5V)
Turbo 240 40m 252 4.20
High 95 1h 93 0.72
Medium 25 12h30m 25 0.15
Low 3 60h 3 0.02

Pulse Width Modulation

Unfortunately, all modes have PWM, and in some of those modes, it’s visible to the naked eye.  It’s by no means the worst PWM, though.  Interestingly PWM is seen even on TURBO which would suggest the light isn’t a direct drive – may be surprising since the output is so high with a 14500 on Turbo.

14500:

 

AA (NiMH):

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 a single mechanical tailswitch on the GTA.

Lumintop GTA flashlight tail switch

The switch is accessible from two sides but sits low enough that tailstanding is possible.

Lumintop GTA flashlight tail switch

The action is: very clicky.

Here’s a UI table!

State Action Result
Off Click On (Mode Memory, if light has been on mode >2s)
On Press Mode advance (LMHT)
On Click Off
On Press 6x Strobe
Strobe Press Low

The manual also mentions that the light may be used in twisty format, but that’s just not something that you’re going to do on a titanium thread light.  It’s too gritty, unenjoyable, and you’ll end up dissatisfied.  Stick with the click.  And twisting still requires the click (the light will never be “on” without the mechanical switch being in the “on” position).

LED and Beam

Lumintop put an Osram KW.CSLNM1.TG emitter in this little thrower.  The reflector that Lumintop uses is deep and wide and smooth – all around great for a thrower.

Lumintop GTA flashlight emitter

The knurled bezel mentioned above also has some shape that allows light to escape when headstanding.

Lumintop GTA flashlight headstanding while on Lumintop GTA flashlight beamshot

LED Color Report (CRI and CCT)

We can see something interesting here about how emitters work, and how they work at different voltages and powers.  The 14500 cell provides a much higher voltage.  At higher voltage, the CCT goes toward the blue.  So if 7000K bothers you, just stick to using 1.5V cells like NiMH or primary alkaline cells.  That way you’ll really peak at around 6700K which is still definitely cool, but not nearly as bad.

14500:

AA (NiMH):

Beamshots

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

14500:

AA (NiMH):

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.

14500:

AA (NiMH):

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

Conclusion

What I like

  • Supports AA and 14500 cell types
  • Simple user interface
  • Very good throw (hits the throw claim!)
  • Small in size
  • Low cost

What I don’t like

  • On a 14500 cell, the CCT is very cool (>7000K)
  • Could have the lighted tailswitch as is on the Tool AA 2.0

Notes

  • This content originally appeared at zeroair.org.  Please visit there for the best experience!
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