Thrunite Catapult V6 SST70 Flashlight Review

Thrunite Catapult V6 SST70 Flashlight Review

Thrunite has a nice update with the Thrunite Catapult V6 SST70. USB-C charging, a very throwy emitter and the great Desert Tan color. Read on!

Official Specs and Features

Here’s a link to the Thrunite Catapult V6 SST70 product page.

Thrunite Catapult V6 SST70 Versions

Only one emitter option exists for the Thrunite Catapult V6 SST70.  That emitter is available in three body colors, though.  Black, Desert Tan (seen here), and “Metal Grey” are available.


These are available on amazon at the moment, and that’s a good place to get them.  The black body comes in as the least expensive, at $74.95.  Both the other two are around $5 more, at $79.95.  Here’s an amazon referral link that’ll get you to the right place to buy the Thrunite Catapult V6 SST70 now!

Short Review

This is an exceptionally worthwhile update to the Catapult V6.  Throw on this model is down just a little bit (under 10%) but that’s fairly meaningless at 700+ meters.  More importantly, this emitter pumps out high lumen numbers and does it well.  Maybe I’ve changed too many diapers, but I have to say, I really love the Desert Tan color, too.  All in all, this is a nice light!

Long Review

The Big Table

Thrunite Catapult V6 SST70 Flashlight
Emitter: Luminus SST-70 (Cool White)
Price in USD at publication time: $74.95 on Amazon (referral link).  (Or $79.95 for Desert Tan/Metal Grey)
Cell: 1×26650
Turbo Runtime Graph High Runtime Graph
Switch Type: E-Switch
Quiescent Current (mA): 0.09
On-Board Charging? Yes
Charge Port Type: USB-C
Charge Graph
Power off Charge Port with cell: lowest 3 modes
without cell: no modes
Claimed Lumens (lm) 2836
Measured Lumens (at 30s) 2833 (99.9% of claim)^
Candela per Lumen 45.2
Claimed Throw (m) 692
Candela (Calculated) in cd (at 30s) 4270lux @ 5.697m = 138586cd
Throw (Calculated) (m) 744.5 (107.6% 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

Thrunite Catapult V6 SST70

  • Thrunite Catapult V6 SST70
  • 5000mAh 26650 Thrunite branded cell
  • Lanyard
  • Charge cable (USB to USB-C)
  • Spare o-rings (2)
  • Spare charge port cover (2)
  • Spare button
  • Split ring
  • Nylon pouch
  • Paperwork

Package and Manual

Thrunite Catapult V6 SST70

Thrunite Catapult V6 SST70

Build Quality and Disassembly

Thrunite Catapult V6 SST70

First off, the V6 SST70 is essentially the same as the V6 I previously reviewed (years ago!)  There are minor but important updates, but overall the look and shape are the same.

Thrunite Catapult V6 SST70

Thrunite Catapult V6 SST70 Thrunite Catapult V6 SST70

The threads on the tail end are unanodized, sort of long, and square cut.

Thrunite Catapult V6 SST70

You can see below the tailcap spring – it’s extremely beefy.

Thrunite Catapult V6 SST70

On the head end is a different setup.  The threads here are anodized, much shorter, and also square cut.  I’d recommend separating the parts as seen below for cell swaps.

Thrunite Catapult V6 SST70

The cell tube is directional.

Thrunite Catapult V6 SST70

As with many (most? all?) Thrunites, there’s a brass button on the head end.

Thrunite Catapult V6 SST70 Thrunite Catapult V6 SST70

Size and Comps

Officially 138mm (Length) x 58mm (Bezel Diameter) x 33.5mm (Tube Diameter).  This is ever so slightly longer (maybe 5mm) than the previous V6.

The weight without a cell is 203g.

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).

Thrunite Catapult V6 SST70

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.

Thrunite Catapult V6 SST70

Is this the shorty thrower we all want??

Thrunite Catapult V6 SST70

Retention and Carry

A nylon pouch is included.  The light will only go one direction – tail down.  The pouch is good quality.

Thrunite Catapult V6 SST70

Thrunite Catapult V6 SST70 Thrunite Catapult V6 SST70

Also included is a lanyard, which attaches on the tailcap through the hole below.

Thrunite Catapult V6 SST70

Power and Runtime

The Thrunite Catapult V6 SST70 has a working voltage: 2.75V-4.2V.  In my experience, the light shuts off at around 3.1V. That’s great.  Might not suck every gram of energy out of a cell, but I like it anyway.

The light doesn’t prefer protected or unprotected, and works with flat or button top cells equally.  What it does need is a cell capable of providing very high output.  Turbo draws nearly 10 amps.  

Thrunite Catapult V6 SST70

Thrunite Catapult V6 SST70

As usual, the cell fits with the positive end toward the head.

Thrunite Catapult V6 SST70

This Luminus SST-70 really blisters out the lumens – this is over 3000 lumens from a single emitter and sustained over 2600 lumens for minutes.  Even after that (and same on High mode), the output for 80 minutes of around 1500 lumens is very good.

Thrunite Catapult V6 SST70 Thrunite Catapult V6 SST70 Thrunite Catapult V6 SST70

The switch indicates as follows:

Blue: 21-100% capacity (3.3-4.2V)
Red: 11-20% capacity (3-3.2V)
Flashing Red: 1-10% capacity (2.8-3V)
Off: 0% capacity (0-2.8V)


Onboard charging is still a feature of the Catapult series.  This one offers USB-C charging.  The charge port has a press-in cover.

A USB to USB-C charge cable is included.

I tested with both a USB source and a USB-C source.  Both work fine, and really look practically the same.

Thrunite Catapult V6 SST70

Modes and Currents

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps
Turbo 2836/1313 220s/89m 2833 9.45
High 1417 102m 1517 3/02
Medium 270 9h 281 0.41
Low 31 86h 29 0.03
Firefly 0.3 70d 0.1 2.66mA

Pulse Width Modulation

No PWM on any mode is seen here!

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

The Thrunite Catapult V6 SST70 has a single switch.  It’s a side, indicating, e-switch.  The indicator is a small circle in the center.  I love that the switch cover on this model is black.  It seems to match the aesthetic very well, but also provides a great contrast to the brown body, making the switch that much easier to find.

Thrunite Catapult V6 SST70

Thrunite Catapult V6 SST70

The switch doesn’t sit too proud, and has fairly low travel, but is positively clicky.  It’s not a hollow click though, and not too loud.  The switch feels like actual metal, and the rubber part under the switch is replaceable.

Thrunite Catapult V6 SST70

Here’s a UI table!

State Action Result
 Off  Click On (Mode Memory)
 Off Hold Firefly
 Any Double Click Turbo
 On Click Off
 On Long Press Mode Cycle (LMH)
 Turbo Double Click Strobe

I appreciate the simple nature of this UI, but I do wish the indicating side switch was more heavily utilized.  Namely, I think every light with indicating switches should have a battery check feature.  Every light with indicating switches.  Every of the lights.

LED and Beam

Probably the biggest update to the Catapult V6 is this emitter.  It’s a Luminus SST-70 in “cool white.”  And it is cool white, but it’s really not that bad of a cool white.

Thrunite Catapult V6 SST70

There’s just one emitter here, and it’s really a fairly small footprint.  Couple that with the smooth and deep and wide reflector, and you get pretty good throw!

Thrunite Catapult V6 SST70 Thrunite Catapult V6 SST70 Thrunite Catapult V6 SST70

LED Color Report (CRI and CCT)

As I said, this is a cool white emitter.  Any of the lower three modes are well under 6000K, which is fairly acceptable.  After that, and unsurprisingly, the CCT tends toward a cooler level and is above 6000K.  On all modes though (maybe particularly the lower level), the Duv is positive (which means there’s a bit of a green tint).


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!

Conclusion on the Thrunite Catapult V6 SST70

What I like

  • Both output and throw meet the specifications
  • Charging at 2A is suitably quick for this 5000mAh cell
  • UI is simple (and very “Thrunite-consistent”)
  • Update to USB-C charging is welcome
  • I love the Desert Tan!

What I don’t like

  • UI lacks any real battery check
  • Not available in NW


  • This light was provided by Thrunite for review. I was not paid to write this review.
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7 thoughts on “Thrunite Catapult V6 SST70 Flashlight Review”

  1. I’m under the impression that the SST70 is less “throwy” and therefore needs more lumens to achieve the same candela as the older V6 with XHP35 HI. I would be interested in seeing the candela of the two lights compared after step-down. Sustained candela would be a great feature to add to these reviews! (I really appreciate the sustained lumens graphs we are getting now)

      1. I’m mostly interested in how the candela numbers compare between the two lights after the timed step-down occurs on turbo because that stepped-down output level lasts longer.

          1. Oh right I should be able to calculate the candela for any given lumen level with that. Doh!

            I don’t see cd/lumen on the original V6 review for comparison though.

          2. Yep, I reviewed that original V6 before I was collecting the cd/lm data, unfortunately. Also before I had calibrated runtime tests. Sorry for that.

  2. flashlight85

    Candela means more to me personally when I’m shopping, I can already see that their last revision, has a higher number and more throw than this one. I hope that Thrunite are not taking a step back. If that’s what you’re worried about like me, it seems that cree is still the way to go.

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