Brinyte PT18 Pro Flashlight Review

Brinyte PT18 Pro Flashlight Review

Today I have in the Brinyte PT18 Pro flashlight, an 18650 light with a Cree XHP35 HD, designed for long weapon use.  I have accessories, too!

Official Specs and Features

Here’s a link to the Brinyte PT18 Pro Flashlight product page.


There are two body colors of the PT18 Pro – this Desert Tan version and a black version.  There is the original PT18 of course, which looks to be largely the same as the Pro, with some changes in the charging setup.


This light is selling for $135.

Short Review

This is a nicely built light, with some cool accessories, and nice weapon mounts.  It’s a little on the expensive side but does seem to meet the claims made by Brinyte.

Long Review

The Big Table

Brinyte PT18 Pro Flashlight
Emitter: Cree XHP35 HD (CW)
Price in USD at publication time: $135.00
Cell: 1×18650
Turbo Runtime High Runtime
LVP? Warning
Switch Type: Both
Quiescent Current (A): ?
On-Board Charging? Yes
Charge Port Type: Proprietary Magnetic
Power off Charge Port with or without Cell? Lowest two modes
Claimed Lumens (lm) 2000
Measured Lumens (at 30s) 1906 (95.3% of claim)^
Candela per Lumen 25.6
Claimed Throw (m) 360
Candela (Calculated) in cd (at 30s) 1980lux @ 4.788m = 45391cd
Throw (Calculated) (m) 426.1 (118.4% of claim)^
All my Brinyte reviews!

^ Measurement disclaimer:  Testing flashlights is my hobby. I use hobbyist-level equipment for testing, including some I made myself. Try not to get buried in the details of manufacturer specifications versus measurements recorded here; A certain amount of difference (say, 10 or 15%) is perfectly reasonable.

What’s Included

Brinyte PT18 Pro Flashlight

  • Brinyte PT18 Pro Flashlight
  • Brinyte 3100mAh 18650
  • Charge cable (USB to proprietary magnetic)
  • Spare o-rings (3)
  • Lanyard (long paracord type)
  • Tactical ring
  • Nylon pouch with cell holders
  • Manual

Package and Manual

That inner black box is hard to get out of that outer blue sleeve.

Here’s a pdf manual, too.

I also received a couple of accessories with my package, and they shipped in this box below.

Brinyte PT18 Pro Flashlight

Build Quality and Disassembly

Brinyte PT18 Pro Flashlight

Build quality is good.  Nothing surprising or bad, but it does feel like a solid light.

There’s a lot going on to consider this a weapon light.  There are three switches and a magnetic charge port…  I’m not saying the light isn’t suited for weapon mount; I didn’t shoot any with this light mounted.

Brinyte PT18 Pro Flashlight

Brinyte PT18 Pro Flashlight

As there should be, there are springs on both the head and tail of the light.

Brinyte PT18 Pro Flashlight

There’s also a tactical ring included on the light from the factory.  It’s removable.

Brinyte PT18 Pro Flashlight

Without the tactical ring and the tactical finger loop, the tail end looks like this:

Brinyte PT18 Pro Flashlight

Without the tactical ring and with the tactical finger loop, the light looks like this.  The finger loop really requires the tactical ring, or it’ll flop around.

Brinyte PT18 Pro Flashlight

Brinyte PT18 Pro Flashlight

The black bezel unscrews easily and cleanly, leaving a light that can be used without the strike bezel completely.  I didn’t remove this any further, but the bezel is held in by a retaining ring, too.

Brinyte PT18 Pro Flashlight

Brinyte PT18 Pro Flashlight

Brinyte PT18 Pro Flashlight

Brinyte PT18 Pro Flashlight

Size and Comps

The light is 164mm x 25.4mm (body) x 41mm (head) and weighs 170g without the cell.

Brinyte PT18 Pro Flashlight

Retention and Carry

There are a number of ways to carry the PT18 Pro.  First is the nylon pouch, which has a spot for the tailcap to protrude from the top.  There are also elastic cell holders on both sides of the holder.  Below, the left photo has a cell in place.

The light can shine out the bottom of the holster, too.

Also included is a friction-fit pocket clip.  It’s not anything too special and would work ok on a belt.

Another thing that’s included is the tactical finger-ring.  It’s keyed so it fits in only one orientation, which is good because the tail switches will always reliably be in the same place.

There’s also a lanyard that attaches using a metal clip, and would be best on the hole in the tailcap (seen above).

In my accessory pack, I received the two items below.  On the left, you can see a weapon mount.

Brinyte PT18 Pro Flashlight

Here are all sides of that item.

Power and Runtime

I tested the light with the included 3100mAh 18650, which is a standard button top.

Brinyte PT18 Pro Flashlight

Turbo steps down after a solid minute, and essentially meets the claim made.  The initial intermediate stepdown offers around 1450 lumens for almost 5 minutes, which is respectable.  Eventually, the light does stepdown very far, and while it’ll click back up to high, steps down to low almost immediately.  The side switch is offering a red flash warning at this point, too.

Brinyte PT18 Pro Flashlight

Here’s a runtime on High.  Unfortunately, the temperature logger stopped during this run, but it was fairly uneventful anyway.

Brinyte PT18 Pro Flashlight

Another thing about the operation – when the light is switched on, the indicating side switch displays approximate cell capacity, as follows:

Constant green: 100%-70%
Constant orange: 70%-30%
Constant red: 30%-10%
Flashing red: <10%


Here’s the magnetic charge cable.  It’s a proprietary connection on the light, but the USB side is normal.  The cable is braided and quite nice.

It connects to the side of the light, and the connection is nice and snappy.  I don’t love that this is proprietary but at least the cell isn’t proprietary.  It can still charge normally in a slot charger.

During charging, the indicating switch is constant red.  When the charge is complete, the switch is a constant green.  The charge cable also has an indicator but it’s mostly just a locator beacon – always blue.  And it’s bright blue too.

Charging is as follows.  Quite fast, at around 1.8A.

Brinyte PT18 Pro Flashlight

Modes and Currents

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps
Turbo 2000 1m+90m 1906 7.21
High 450 150m 473 0.91
Middle 60 930m 58 0.20
Low 10 1870m 10 0.11

Pulse Width Modulation

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, which 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.

And just for fun, here’s strobe.

Brinyte PT18 Pro Flashlight

User Interface and Operation

There are three switches on the PT18 Pro.  First are the tail switches – one proud mechanical switch, and one “side” e-switch.  Normally a paddle switch would be there but this is just a proud angled e-switch.

Brinyte PT18 Pro Flashlight

Also on the light is an indicating e-switch on the head end.  That spot in the center can indicate red, orange, and green.

Brinyte PT18 Pro Flashlight

Brinyte PT18 Pro Flashlight

Here the switch can be seen in green.

Brinyte PT18 Pro Flashlight

Also, an option for operation is a remote pressure switch, which replaces the two switch tailcap.

Brinyte PT18 Pro Flashlight

When mounted, it looks like this:

Brinyte PT18 Pro Flashlight

This switch is neat and works well.

There are three switches.  Brinyte names them as follows:  Tail primary switch (TPS) (the bigger, proudest switch).  Tail Side Switch (TSS) (the oblong switch on the tailcap angle.)  And finally, the Front Side Switch (FSS).

This image shows full operation with just the two tail switches.

Brinyte PT18 Pro Flashlight

This image shows full operation with the tail power switch and the front side switch.

Brinyte PT18 Pro Flashlight

Here’s a UI table!  I’m not sure the table can be comprehensive…  I find that image above to be a little confusing, actually.

State Action Result
TPS Off Click TPS On (Turbo)
TPS Off Click TSS Momentary Strobe
TPS Off Tap TPS Momentary Turbo
TPS On Click TSS Mode advance (LMHT order)
TPS On Hold TSS Strobe
TPS Off Click FSS 3x Lock – indicated by two flashes of main emitter.  Does not lock tail switches!
Lock Click FSS 3x Unlock
Lock TPS on for >5s Unlock
TPS Off Click FSS Turbo
On Click FSS Mode Advance
On Hold FSS (>1s) Off
TPS Off Hold FSS Low
On Double Click FSS Strobe
Strobe Double Click FSS SOS
SOS Click Regular modes
TPS On Click FSS Mode advance (LMHT order)
TPS On Double Click FSS Strobe

LED and Beam

The emitter here is a Cree XHP35 HD, which is the same as was used in the PT18 (not pro).  The reflector is deep and smooth.

Brinyte PT18 Pro Flashlight

The removable strike bezel allows light to peek out.

Brinyte PT18 Pro Flashlight

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

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.

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


What I like

  • Comprehensive package
  • Good output
  • PLENTY of options in the UI
  • Nice optional mount option
  • Pressure switch option

What I don’t like

  • The UI can be overwhelming, but generally functions like you’d expect it to
  • $135 is high, but maybe not too high


  • This light was provided by Brinyte for review. I was not paid to write this review.
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2 thoughts on “Brinyte PT18 Pro Flashlight Review”

  1. Who are buying these lights? I’m not saying this is a bad light, but paying that price for a light that does under 1000 lm long term. You can get a TN42 from Thrunite for $24 dollars more on Amazon. I realize the TN42 is a spot light, but if your only argument is that this light is also able to be mounted to weapons.Then there is still cheaper lights that will mount to a weapon, that still get the job done for less then the price for this one.

    1. The PT18 Pro and TN42 are really not even in the same category of flashlights, though.

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