Thrunite Ti4 Flashlight Review

The Thrunite Ti4 flashlight uses two AAA cells. It features a Cree XP-G2 emitter and a tail clicky switch. Read on for more info!

Official Specs and Features

Here’s a link to the Thrunite Ti4 flashlight product page.

Versions

As with most Thrunite lights I’ve seen lately, there is a cool white (CW) and (thankfully!) a neutral white (NW) version. The one I have is the CW.

MSRP

Listed and available on Thrunite’s Amazon site for $19.99 (referral link).

Short Review

Disappears in a pocket, and has a nice clicky action (much like a Bic Click pen, the only style pen I use!) I’m quite pleased with this light and find it to be a good value.

Long Review

The Big Table

Thrunite Ti4
Emitter:	Cree XP-G2 (CW)
Price in USD at publication time:	$19.99
Cell:	2xAAA
Runtime
LVP?	?
Switch Type:	Mechanical
On-Board Charging?	No
Claimed Lumens (lm)	252
Claimed Throw (m)	67
Candela (Calculated) in cd (at 30s)	175lux @ 2.158m = 815cd
Throw (Calculated) (m)	57.1 (85.2% of claim)^
All my Thrunite 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

Thrunite Ti4
Spare O-rings (2)
Manual

Package and Manual

Straight up, typical Thrunite package, which I’m very pleased about. It’s a cardboard box with no plastic on the outside. The light is held in place by a bit of foam and is enclosed in a soft plastic bag. This is a great package. Maybe the bag around the light is unnecessary, but I really like these Thrunite packages.

The manual is thorough and full-featured, including user interface and Specs and warranty, warnings, and the whole bit. It’s also nicely folded (something that really gets my attention), such that when it’s open to the language of your choice, it’s actually already creased to make easy viewing. This might sound minor, but it’s something that’s been done right, and I appreciate it.

Build Quality and Disassembly

The Ti4 is nicely built. It feels robust. Unusually, this light has no knurling – probably a normal thing for penlights (this is my first penlight!).

There’s not too much to disassemble, however. That said, an emitter swap is possible (because other users here have reported doing it!)

The cell tube is directional, and the threads have plenty of lube.

Driver shot:

Size

This is a long light. It’s a 2-cell AAA light, and on par for what a light of that cell configuration would be, but that just makes it long! Longer than a Convoy S2+ (or a BOSS 70!). It’s thin, too. It’s… typical penlight?

Here are some pics for you to see for yourself.

Retention

There is but one option for retention on this Ti4: The installed pocket clip. The clip can be removed, but – as it’s the type that has a ring around the threads of the tail – there will be a small gap. The clip is also directional – there’s a detent that requires specific orientation so that everything will screw together nicely.

Power

As mentioned, this light works with two AAA cells. I use and all my testing is done with Eneloop AAA cells.

Two AAA cells don’t provide a lot of Ah, so we wouldn’t expect tons of runtime with this penlight. And that’s what we get really… Convenient light, but not for very long. Here is a runtime graph, on the highest setting.

User Interface and Operation

There’s a single metal reverse clicky tailswitch. It’s very proud.

So proud that I’ve accidentally activated this light a number of times (two, at the very least, and I think once when I had AA and left the light on overnight!).

The user interface is fairly simple:

A single (full) click will turn the light on.
When the light is on, half-press the tail switch to cycle through Firefly, Low, High, Firefly, Low, High, and Strobe.
When the light is on, quick double click (within 1 second) the tail switch to cycle through Firefly, Low, High, Firefly, Low, High, and Strobe.
If the second click is after 1 second but less than 10 seconds, the light will memorize the last mode. If it is after 10 seconds, the light will start from Firefly mode again.

All that said, I found the user interface to be different enough from what I’m used to that it took some practice to be able to get the modes I expected from off. I was also not a fan of the means by which Strobe is accessed- I found myself accidentally ending up at Strobe a number of times.

LED and Beam

There’s a Cree XP-G2 in this Thrunite.

The reflector is a tiny, shallow orange peel reflector. That smallish reflector makes for a quite broad beam, with little throw and almost no hotspot. A very good beam for what’s probably the normal use case for this light.

The mode spacing seems fine, and low is actually pretty low.

Beamshots

These beamshots always have the following settings: f8, ISO100, 0.3s shutter, and manual 5000K exposure. These photos are taken at floor level, and the beam hits the ceiling around 9 feet away.

Random Comparisons and Competitive Options

There are a couple of very similar lights worth mentioning. First, and probably most similar, is the Olight O’Pen. That’s an older light and maybe not available now, but the clicky bits look almost just like what’s on this Thrunite here. Just an interesting tidbit, really, nothing more.

Another similar light is the EagTac PN20a2, which not only has a tactical interface and clicky, but also has a selector ring.

And one more, the Nitecore MT06MD, which I’ll have a review copy of soon enough, compares physically but has a Nichia 219b.

Conclusion

What I like

Build quality is fine
It’s a very pen-like penlight
The clicky is very positive and rewarding
The beam profile is very good for this class of light
NW and CW are both available

What I don’t like

The clicky is too fun to click
Short runtimes
Accidental activation had been a problem

Buying

If you’re interested in purchasing this light, have a look at Thrunite’s Amazon page. Thrunite offers a two-year free replacement with a new one if light defects with normal use. Lights just need to send the defective light to the ThruNite warehouse.

Notes

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