Acebeam is offering a 4000K version of the T36 dual switch tactical flashlight with a CREE XHP35 HI! This incredible light just got better.

Official Specs and Features

Here’s a link to the Acebeam T36 4000K tactical flashlight product page.


There are a couple of emitter options:  6500K, and 4000K (seen here).  There are no body options.


The Acebeam T36 4000K tactical flashlight is selling for $109 at

Short Review

This is a fantastic light – 4000K XHP35 HI is becoming one of my favorites.  The whole package from Acebeam here is great, too.  All in all, a capable, pleasant package.

Long Review

The Big Table

Acebeam T36 4000K tactical flashlight
Emitter: Cree XHP35 HI (4000K)
Price in USD at publication time: $109.00 at
Cell: 1×21700 (included)
Turbo Runtime Graph High Runtime Graph
LVP? Yes
Switch Type: Both
Quiescent Current (mA): ?
On-Board Charging? Yes
Charge Port Type: USB-C
Charge Graph
Power off Charge Port
Claimed Lumens (lm) 2000
Measured Lumens (at 30s) 1594 (79.7% of claim)*
Candela per Lumen 13
Claimed Throw (m) 303
Candela (Calculated) in cd (at 30s) 693lux @ 5.585m = 21616cd
Throw (Calculated) (m) 294.0 (97% of claim)*
All my Acebeam 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

what's included

  • Acebeam T36 4000K tactical flashlight
  • Acebeam 5100mAh 21700 cell
  • Charge cable (USB to USB-C) (which I managed to not picture here, somehow)
  • Lanyard
  • Nylon pouch
  • Adapter tube (21700 to 18650)
  • Spare o-rings (3)
  • Spare clicky cover
  • Manual and papers

Package and Manual

Acebeam T36 4000K tactical flashlight inside box


Build Quality and Disassembly

feature photo

Just like the other two fairly similar Acebeams I reviewed (the L16 and EC65), the T36 is very well built.  And, of course, just like the T36 in 6500K that I reviewed almost 2 years ago.

One of the main things you might notice is that silver strike bezel.  It’s easily removable, and reversible, and really a neat little attachment!  The second thing you might notice is that the tailcap is quite thick!  Has to do with all the electronics allowing charging, but yeah, in use it’s noticeably thicker.

Below is a “top down” view.

top down view top down view top down view top down view top down view top down view clicky

The head has nice deep cooling fins.

cooling fins

That tactical ring is very easy to remove.  The threads are even very short.

bezel removed

Unfortunately the bezel can’t be removed seamlessly – it’ll come off completely, but you’re left with some fairly fine threads exposed.  The lens or reflector will not fall out, however.

bezel removed

Here’s the bezel reversed.  It doesn’t screw down all that far, but in this setup makes for an interesting display when placed on it’s head, and on.

bezel inverted bezel inverted

Threads in the tailcap end are very smooth, square cut, anodized and longish.  tailcap off

Both the head and tail have thick, beefy springs, which you’d expect on a tactical flashlight.

tailcap spring

There’s a bunch of stuff going on in the electronics, since this is a charging light.  Both the tail and head have big beefy springs, but also little finger connectors, which allow charging.

springs in head and tail


Size and Comps

Size: 145mm (Length) x 30mm (Head Dia.) x 25.4mm (Body Dia.)
Weight: 113g without battery

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.

beside torchlab boss 35

Retention and Carry

Included and attached from the factory is a friction fit pocket (or belt) clip.  It’s very snug.

Clip hug!

friction fit pocket clip

And finally, the lanyard attachment point, which is on the tactical ring.  The tactical rings does come off, and is not threaded.

tactical ring lanyard hole

tactical ring lanyard tactical ring lanyard

Included is a nylon pouch, which this tube light will easily fit into bezel up or down.

nylon pouch

nylon pouch

Power and Runtime

Primarily the T36 will be powered by the included 5100mAh 21700 liion cell.  Also included to allow some versatility is an adapter to allow 18650 cells.

The springs on both ends inside should mean that any cell type will work fine.

21700 included

21700 included 18650 adapter

The cell is installed the normal way – positive terminal toward the head.

21700 included installed 21700 included installed

Here’s a runtime on Turbo.  The stepdown is fairly quick, and possibly temperature based.  The light steps down dramatically, to around 700 lumens.

runtime graph turbo

I tested three other modes (all but the lowest mode!).  Each displays a main emitter flash when cell voltage is low.  Output is very stable on all modes.

runtime graph high runtime graph medium runtime graph low

At the end of the runtimes, the light’s main emitter flickers on and off, and the light does shut off with a cell voltage of around 2.9.  That’s fairly good behavior, and certainly good for the cell.  (Less good if you’re in a tactical situation and must have light, though.)


The T36 has on-board charging, via a nicely covered USB-C port.  A cable is included, seen below.

The charge port is on the head, and covered by a press-in rubber boot.

The charge port is opposite the e-switch in the head.  Just near the e-switch is a status indicator, that seems to indicate nothing more than charge status.  If the light is charging, the indicator is red.  If charge is finished and the light is connected to power, the indicator is green.  Unfortunately this seems to be all the indicator does!!

charge graph

Modes and Currents

These output claims are almost certainly for the 6500K version.  Acebeam has a (bad?) habit of not speccing the neutral versions of their lights.

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps
Turbo 2000/800 1.5m/2.5h 1594 8.60
High 1350/650 10m/3h 855 2.67
Med 500 5h 271 0.66
Low 200 12h 99 0.28
Ultra Low 2 28d ~ 0.13

Pulse Width Modulation

There is no pwm to be seen here.

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 are two switches on the T36.

First is a mechanical switch on the tail cap, just like on the L16.

tail switch

There’s a metal switch like is on the EC65, in the center of the head. It’s a very flush button, and very positively clicky (but not loud).  I like this switch a lot.


Here’s a UI table!

State Action Result
Off Click Side Switch (SS) On (Mode Memory)
Any Click Tail Switch (TS) (Even during Lockout) Turbo (Steady) (and precludes Side Switch use)
Any Tap TS (Even during Lockout) Momentary Turbo
On Double Click SS Turbo
On (Non strobe) Hold SS Mode advance (LMH)
Any Triple Click SS Strobe
Strobe Click SS Off
Strobe Hold SS Low
Off Hold SS Firefly
Off Hold SS >3s Lockout (Signified by two flashes of Moonlight)
Lockout Hold SS <3s Unlock to Moonlight (one flash of Moonlight, then steady Moonlight)

LED and Beam

Acebeam has a Cree XHP35 HI in the T36.  In this case, it’s a 4000K cct emitter, and that’s very much what I’d recommend you buying.  The reflector is small and fairly shallow.

emitter emitter on with bezel inverted beamshot while in use


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)

Test light is on the left!

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


What I like

  • Great full package setup
  • Build quality is great
  • Good user interface
  • The 4000K emitter is wonderful
  • USB-C charging! (with a very snug charge cover)

What I don’t like

  • Indicator near e-switch is definitely underutilized


  • This light was provided by for review. I was not paid to write this review.
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3 thoughts on “Acebeam T36 4000K Tactical Flashlight Review”

  1. I am really torn between t his and the Fenix PD36R. Is there anything that would sway you either way? Seems like these two are on an island.

    1. I don’t recall offhand what temperature the PD36R emitter is, but I can say without question that the 4000K of this T36 is absolutely fantastic. That’s probably what would sway me.

  2. Yo también dudo entre esta T36 y la PD36r como “única” linterna un poco para todo. Me gustan los 4000k de la Acebeam, pero quizás sea más práctica en tiempo de ejecución la Fénix.. aunque esta es muy fría.. Estoy entre estas dos opciones para tener una opción todoterreno.

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