Thrunite TW10 Flashlight Review

Thrunite TW10 Flashlight Review

The Thrunite TW10 flashlight is a new weapon-mounted light that offers built-in USB-C charging, dual e-switches, and one straightforward mode. Read on for testing!

Official Specs and Features

Here’s a link to the Thrunite TW10 Flashlight product page.


I believe only black is available currently.  The site has a neutral white option listed, but I don’t expect it to ever be available.

Thrunite TW10 Flashlight Price

Currently, on sale, the Thrunite TW10 flashlight is $50.35.  And actually, on amazon, you can get 20% off the list price of $55 – so that puts this light in the $44 range!  Here’s an Amazon referral link to the Thrunite TW10.

Short Review

I’m not a big shooter, so I’m testing this mostly from the perspective of a flashlight.  As a one-mode light, this is pretty great.  If that’s what you need on your weapon, then I can say the user interface on this one is good, and it seems reliable.

Long Review

The Big Table

Thrunite TW10 Flashlight
Emitter: Osram P9
Price in USD at publication time: $50.35, even less on!
Cell: 1×18350
Cooled Runtime Graph Uncooled Runtime Graph
LVP? Warning
Switch Type: E-Switch
Quiescent Current (mA): 0.02
On-Board Charging? Yes
Charge Port Type: USB-C
Charge Graph
Power off Charge Port “with cell: yes
without cell: no”
Claimed Lumens (lm) 900
Measured Lumens (at 30s) 851 (94.6% of claim)^
Candela per Lumen 4.4
Claimed Throw (m) 125
Candela (Calculated) in cd (at 30s) 176lux @ 4.53m = 3612cd
Throw (Calculated) (m) 120.2 (96.2% of claim)^
All my Thrunite 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 with the Thrunite TW10 Flashlight

what's included

  • Thrunite TW10 Flashlight
  • Thrunite 1100mAh 18350 (customized)
  • Charge cable (USB to USB-C)
  • Spare o-rings (2)
  • Spare charge port cover
  • Hex driver
  • Spare screws (2)
  • Alternate rail mount

Package and Manual


Build Quality and Disassembly

feature photo

Another Black Scout Survival light by Thrunite!  This weapon-mounted light has a no-tool mounting system.

feature photo

Below you can see the head removed.  Only the head comes off.  The head has a spring, which contacts the negative terminal of the cell!  On the other end (which I managed to not photograph, sorry), there are two springs – one is for negative contact, one for positive.  More on all that later.

head removed tailstanding screw for mounting

Size and Comps

Officially:  77mm x 26mm x 32.5mm, and 78g in weight.

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).


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.

beside torchlab boss 35

Retention and Carry

The Thrunite TW10 flashlight is essentially only a weapon-mounted light.

weapon mounting

The mount is for mounting on rails, and two types of adapters are included.  Below, you can see the 1913 style, but also included is a GL type.  The GL ships installed.  A hex tool is required for swapping this part, and that is included too.  There are even two spare screws!

Below are just some random mount photos – you’re probably not throwing this on your AR-style weapon, but it’d be reasonably possible I think.

mounted on crosman dpms sbr bb mounted on crosman dpms sbr bb mounted on crosman dpms sbr bb Thrunite TW10 Flashlight mounted on crosman dpms sbr bb Thrunite TW10 Flashlight mounted on crosman dpms sbr bb Thrunite TW10 Flashlight mounted on crosman dpms sbr bb

Something that positively chaps my hide is that Nerf rails are not standard dimensions.  So while this Thrunite TW10 flashlight looks mounted, it’s not really mounted well.  (Again, not that you’d really mount this way on any gun.)  I really wish Nerf rails were standard rails!!

There’s nothing else for carrying the Thrunite TW10 flashlight.

Power and Runtime

The Thrunite TW10 flashlight is powered by a single lithium-ion cell.  One is provided, seen below.  It’s a 1100mAh 18350, with a proprietary connection on the positive end.  This connection has both positive and negative terminals.  Unlike some previous Thrunites which carried this cell, on the Thrunite TW10, this cell with these specialty connections is required.

included 1100mah 18350

And below is a better view of the positive (center) and negative (surrounding positive) terminals on the proprietary, along with the standard negative on the end opposite positive.

included 1100mah 18350

Be careful here, because the cell goes into the TW10 in the unusual way – negative terminal toward the head.

There’s just one mode, so I did testing cooled and uncooled.  Initial output isn’t that different, but the stepdown output is markedly different.

cooled runtime graph uncooled runtime graph

A low voltage warning is given by a red indicator beside the charge port.  It is possible to loosen the head just a tiny bit and mechanically lockout the light.


Also built into the Thrunite TW10 flashlight is USB-C charging.  The port is in the tail and has a press-in clear rubber cover (there is a spare).  This is a high-quality port – something I don’t say all that often because it’s not always so evident.  The port lines up perfectly with the opening.

charge port cover

There’s also a cable included for charging – USB to USB-C.

The graph below shows two types of charging.  Solid line is USB to USB-C (which is the “intended” type since that’s the cable Thrunite includes).  The dashed lines are USB-C to USB-C charging.

charge graph

Modes and Currents

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps
On 900/427 195s/135m 851 7.35

Pulse Width Modulation

The single mode does not utilize PWM.

pwm graph

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 are more switches on the Thrunite TW10 flashlight than there are modes – two switches on the tail are available for ambidextrous use, and either-handed shooting orientation.

dual e-switches

The switches do the same thing exactly and don’t control any different aspects.  It’s possible to turn on with one switch and turn off with the other.

The action is very low and the switch is very positive.  It’s also…. a little loud – so bear that mind if you do a lot of sneaking around with your gun drawn.

Here’s a UI table!

State Action Result
Off Click On
On Click Off
Off Hold Momentary

LED and Beam

Thrunite states this emitter as an Osram P9.  It’s also cool white.


A neutral white option is mentioned on the website but Thrunite has been doing that for a while and never actually offering nw.  So we’ll see.


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

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

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

beamshot on door compared to nichia 219b

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


What I like

  • Easy user interface
  • No-tool mounting
  • Uses 18350
  • 18350 is included
  • GL and 1913 adapter included
  • Complete package
  • Low quiescent current

What I don’t like

  • Cool white
  • Customized cell is required


  • This light was provided by Thrunite for review. I was not paid to write this review.
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