Olight I3T EOS Flashlight Review

Official Specs
Short Review
Long Review
  What's Included
  Manual and Packaging
  Build Quality and Durability
  User Interface and Operation
  LED and beam
  Tint vs...
  Beamshots, Runtime, etc table.
  What I like
  What I don't like
Up Next


Olight sent a couple of their new lights for review.  The I3T and the I1R.  Today I’m reviewing the first of those two, the I3T.  It’s a triple A clicky, with a simple UI.

Official Specs and Features


There’s only one version of this light.


The MSRP and going rate for this light is $19.99.

Short Review

A fine little simple light.  I like the design, the switch is good, and I really like the simplicity.

Long Review

What’s Included

  • Olight I3T
  • Primary AAA cell
  • Manual


Package and Manual

The I3T comes in what seems to be Olight’s new packaging.  These are tear-strip sealed boxes made of reinforced card stock.  Very nice material, and tamper proof.

The manual is fairly typical of Olight.  One paper printed on both sides, with a diagram and table, and then a bunch of different languages.

Build Quality and Disassembly

Like many Olights, this light has a nice feel in-hand.  The anodizing is top quality, and feels very smooth.


The new and fancy “double helix” Olight is so proud of needs to provide good grip for one handed use.  It does an okay job in this regard, but I found it to be not quite as grippy as I wanted, and yet a bit sharper than I like all at the same time.

The tailcap has a good bit of reeding, allowing easy cell swaps.

This is as far as I got the light apart.  The head didn’t come off readily, and I didn’t fight with it.

The tailcap has nice thick square cut threads, and is unanodized.  This does mean that physical lockout isn’t possible, but as this is a mechanical clicky, there’s no drain on the cell if the light is off.  There’s also a spring on the tailcap.  It’s not double sprung, but it’s stiff enough, and nice quality.


Officially Weight 41g, Length 89mm, Head and body diameter 15mm.

By no means is this the smallest AAA clicky.  It’s quite a bit longer than the ReyLight Pineapple Mini, and a little longer than the Lumintop Tool (mechanical clicky).


The pocket clip, which is arrives installed, is one of the new versions.  It has the folded over, clip-either-direction setup, and there’s a lanyard hole in the shoulder, too.  At one point I didn’t like these clips, and while I still prefer the more traditional type, these have grown on me a little.  Whatever you think about the clip part, it is held snugly on the body.


No lanyard or magnet is included.


Power is provided by a single AAA cell.   Olight does include a primary cell, but all my testing was done with a Eneloop AAA NiMH.  As with most flashlights, the positive end of the cell goes toward the emitter.


Runtime is rated at 21 minutes for High.  Output is in fact steady at around 230 for almost 10 minutes, then drops off steadily to around 80.  80 lumens is much higher than the next mode down (Low), and this is stable for another ~50 minutes.

High 1.png

With a projected runtime of 16 hours on Low, I didn’t test that mode.

User Interface and Operation

The switch is a mechanical forward clicky.  It’s very clicky, and clicks on the downstroke and upstroke.  The click is quite loud.


Here’s a UI table!

State Action Result
Off Click Low
Low Click High
Off Half press Momentary (Low first, another half press for high)

The light will revert to low as the next mode once off for 2 seconds.



Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens
High 180 21m 232
 Low 5 16h ~

LED and Beam

The emitter used in this AAA light is the Philips LUXEON TX.  I can’t think of a single Luxeon TX I’ve tested before.  I like the tint and the beam profile is good too.


It’s behind a TIR optic, which provides a fairly broad hotspot, and a reasonable amount of spill on High.  On Low, the spill is hardly noticeable at all.

Tint vs BLF-348


Beamshots, Runtime, and Lux Measurements

Olight i3T EOS
Emitter Philips LUXEON TX
Emitter Notes
Cell AAA
Glamour Shots Beamshots [0.3″, f/8, ISO 100, 5000k]
Runtime Chargetime N/A
Claimed Lumens (lm) 180
Lux (Measured) 64 lux @ 4.21 m
Candela (Calculated) in cd 1134.3
Throw (Calculated) (m) 67.4
Throw (Claimed) (m) 60

Random Comparisons and Competitive Options….

The only other Luxeon TX light I’m seeing at the moment, in the AAA format, is another by Olight – the i3E.  I have a few of those, and they’re good lights too.  Very simple.  But they’re twisty.  So if you want the Luxeon TX in a clicky format, the I3T is your choice.


What I like

  • Simple UI
  • AAA format (with alkaline/NiMH support)
  • TIR optic beam profile
  • No strobe!
  • Square cut, high quality threads

What I don’t like

  • Spirals on the side are too sharp but not grippy enough
  • No Nichia option

Up Next

Next week I’ll have lights, and hopefully a charger review.  At least.  Stay tuned!


  • This light was provided by Olight for review. I was not paid to write this review.
  • This content originally appeared at zeroair.wordpress.com.  Please visit there for the best experience!
  • Whether or not I have a coupon for this light, I do have a bunch of coupons!!  Have a look at my spreadsheet for those coupons. It’s possible to subscribe and get notifications when the sheet is edited!!

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