Wurkkos FC13 Review (2000 Lumens, $32, Anduril 2, USB-C)

Today I am taking a quick look at the Wurkkos FC13 a 18650 light running an SFT40 LED and Anduril 2 firmware. It features a colored bezel and RGB button on the side as well as onboard USB-C charging. Thanks to Wurkkos for sending this to me to look at and review.


Watch this review on YouTube: 

Follow me on Instagram: https://www.instagram.com/liquidretro/ 

Join the Facebook Page: https://www.facebook.com/LiquidretroReviews/ 

Follow me on TikTok: https://www.tiktok.com/@liquidretro1

Enjoy this review? Buy me a Coffee/Beer: https://www.buymeacoffee.com/Liquidretro

Find all my social media at https://linktr.ee/liquidretro

See my Amazon Store with my gear recommendations https://www.amazon.com/shop/liquidretro


Get the Wurkkos FC13 at Amazon at https://amzn.to/3zloXwQ

Use code 6ZXGKK9W to save 20% off either the SFT40 or XHP50 version. Valid until April 10 2023


Packaging & Accessories

Much like Sofirn, Wurkkos has recently gone through a packaging quality upgrade. Now you have a nice white magnetic fold-out box with a full-color photo of the light on the front, a description and spec chart on the back and the specs of the exact model you ordered on the end cap.  Inside you have an Olight-style yellow card with first-time startup instructions telling you to remove the insulator inside the battery compartment. 

Accessories that are included are the light itself, a 3000mAh button top 18650 (Standard), USB-A to C charging cable, Pocket clip, Lanyard, bag of extra orings, and a manual. 



A few notes on construction, the light is made from aluminum and hard anodized in black. At the current time that’s the only color that’s being offered. The light comes into 3 pieces, the tail is flat and nonmagnetic. The tail cap has minimal milling, the clip is designed to attach at one point, and the body tube has some milling for style and weight reduction over anything else. Threads are anodized, square cut and nicely greased. 

The head features a large relief cut for the silicone button that stands slightly proud. The button is smooth in texture and has areas where it’s thinner to allow the LED underneath to shine through and display it’s many colors. The USB port cover stays out of the way. The bezel is flat, and there is an orange aluminum accent piece holding the glass lens and a heavy orange peel reflector in place. 



The light is running Anduril 2 which I won’t go into depth about as I have covered it in the past and it’s pretty complicated. If you don’t know the firmware you will want the diagram to help you learn. It does have ramping UI by default or you can switch it into a 7 step stepped UI. 

The only thing I can say is I have had quite a bit of difficulty getting the standby LED color to change, but I can replicate what that should look like by locking out the light and showing you what that looks like. 

For more info and the firmware diagram check out https://ivanthinking.net/thoughts/anduril2-manual/



The pocket clip appears to be nearly the same model as what was on the TS21, with the only difference being mainly where the hole is for a lanyard attachment. On the FC13, I would call this a good clip, it’s fairly deep carry, dual direction and didn’t hang up on my jeans pocket in any way. I do recommend you use mechanical lockout though so there are no accidents. You can attach a lanyard on the flat nonmagnetic tail cap or on the clip itself. 


Size & Weight

I measured the length at 114mm, the minimum diameter on the body at 22mm, and the maximum diameter at the head at 27mm. Weight with the clip and battery came in at 121.9g or 4.3oz. When I compare it to a few other Wurkkos lights I have the FC13 is right in the middle length-wise between the TS21, and the FC11. The head is more on the size of the TS21 though. 


LED & Beam

The FC13 is available with Two LED currently, a Cree XHP50.2 at 5000k and a SFT40 at 6000k which is what I have. On my Opple meter I measured the tint on a medium output power at 5783k, and 66CRI. Tint was just ever so slightly green very hard to notice in my eyes. There is PWM here as it’s an Anduril 2 light. The beam here is a small hotspot with minimal spill. This is what we would expect from the flat-top SFT40 LED in my example.

I measured the parasitic drain when the LED is on in high mode at 5.50mA, (Milliamps) and on low the button pulled 156uA (microAmps) and with the button off 46.2uA (Microamps). So as cool as the RGB button LED is, on it’s brightest mode it will drain the light in less than a month, so I would recommend turning it to low or off (or mechanical lockout by unscrewing the head or tail a ¼ turn). 



Since the light runs Anduril 2, you don’t have normal stepped modes like most other lights have, instead you have ramping and 7 different stepped modes plus Turbo, so for output testing, I only tested a few. For the SFT40 version of the light which I have on my Texas Ace Lumen tube, I came up with 1640 Lumens on Turbo and 640 on what I will call high. On it’s lowest output it’s sub lumen.


Heat & Runtime

Turbo on my light ran for about 3 minutes before stabilizing with a few steps to get there from the nearly 1800 peak starting lumens. During this time heat peaked at about 46C on an uncalibrated light at the 90 second mark. With the longer runtime graph you can see as heat dissipates the light does increase in brightness too. Total effective runtime is around 3 hours. With a runtime comparison of Turbo with lower modes we can see running at about half power gives far greater runtime lengths out to 13 hours or so. 



The light features onboard USB-C recharging. I found the port to be recessed a little deeper and access to be slightly tighter than average. The result was the light was pickier about the cable being used to charge it. Charging from LVP at 2.834v to Full at 4.150v came in at 2:11:00 with max charging speed being 1.2A. It’s a very flat charging curve that tapers down at the end. The LED in default mode starts orange and blinks when charging and goes solid when charged but remains orange. You can use the light when it’s charging, but you will only be able to use it in it’s lower modes.

The light also works as a powerbank for your USB-C Devices. I didn’t test any runtimes on this other than to verify it worked with my Samsung S22 Ultra smartphone. 



I wouldn’t call the Wurkkos FC13 a successor to the well respected and often recommended FC11 for a few reasons. While the price is very favorable, and the performance is good, the Anduril 2 UI isn’t as easy to use for a lot of people as the FC11’s more standard UI. What I would say the FC13 is, is a good choice for enthusiasts who want Anduril 2, and more throw than the FC11 has in situations where a high CRI isn’t important. The RGB LED in the button is fun, despite being a bit difficult to change in my example. Overall a good light for the right application, but maybe not quite a universal across the board recommendation like the FC11.

Get the Wurkkos FC13 at Amazon at https://amzn.to/3zloXwQ

Use code 6ZXGKK9W to save 20% off either the SFT40 or XHP50 version. Valid until April 10 2023

Wurkkos FC11 Review (Samsung LH351D 5000k 90 CRI, USB-C, 18650, $30) Discount Available

Wurkkos (Pronounced Workos) is a new brand on the market. They are being produced along with the assistance of Sofirn and sharing a factory. The Wurkkos FC11 caught my eye because it was using desirable Samsung LH351D high CRI emitter at 5000k, had USB-C and is pretty affordable. Thanks to Wurkkos for sending this to me to take a look at and review. Be sure to check the description of the video for a discount available to my viewers for this light.


YouTube Version of this Review: 

Join the Facebook Page: https://www.facebook.com/LiquidretroReviews/ 

Follow me on Instagram: https://www.instagram.com/liquidretro/ 


Packaging & Accessories

Packaging is a yellow and white cardboard box with just the company name on the outside. Inside the light came wrapped in a bubble, and accessories include 2 extra orings, generic lanyard, and a USB-A to USB-C cable. The light comes with a non deep carry pocket clip on it and a Wurkkos branded 3000mAh 18650 battery inside. I tested the battery capacity at 2854mAh on my Xtar VC4S charger. I can read the battery code as 01VCEAJ?1224?18CF0000180. 




The Wurkkos FC11 is made from aluminum and hard anodized a semi gloss black. Very similar to Thrunite or Sofirn’s lights. The tail is flat, and magnetic, strong enough to hold the light horizontally. The knurling on the tail cap is straight but with some inpercise milled flats around it, It’s not noticeable unless your really looking. Threads are shallow square cut and anodized. 


The body tube is ribbed which I like the look of, it’s different, not a grippy design though. The clip only attaches on one end of the tube but the tube is reversible so you could mount it at the front if desired. I do hope Wurkkos releases a deep carry pocket clip for this light as it would improve it’s EDC ability in my opinion. There is a little battery body rattle when the light is shaken violently but it’s minimal, and dual springs in the tail would improve the noise you get if you strike the light, but it didn’t ever lose contact with the battery for me. 

The head is pretty standard looking, the semi transparent button has texture on top and sits fairly flat, it has a blue bezel that kind of reminds me of Olight but looks good. The sides around the pill area have a bit of a fin shape milled in and could use a little more deburring. The USB_C charging port is opposite the button and covered with a large silicone door that fits pretty well. The lens is plain mineral glass, the reflector has a basic orange peel and the Samsung LED is nicely centered. 


Size & Weight

I measured the FC11 at 116mm in length. 24mm at the tail, and 25mm at the thickets part of the head. Weight with the included battery and pocket clip was 112.1g. The light is IPX 7 rated (Water upto 1 meter).

Size wise there are a lot of similar lights to the FC11. Length and diameter wise the Convoy S2+ is basically identical but my S2+ is the UV model so not a great comparison for beam shots. My Thrunite TC15 is about 7mm longer and about 1.5mm larger in diameter. 



LED | Beam Shots  | Heat

The Wurkkos FC11 is using the Samsung LH351D LED, in 5000k and is also considered high CRI at 90. This is a great LED to use, and one of the light communities favorites right now because of it’s high CRI and neutral tint. It’s also my first time getting a hold of this LED and I am a fan. Mine seems to be pretty neutral with just the slightest tint of green but I have heard of others getting a more green tinted LED. That’s how the bin lottery works unfortunately. The light uses an orange peel reflector behind a non AR glass. The beam profile here is does have a bit of a hot center, but fades nicely into spill. No undesirable rings or artifacts in the beam itself. Good for general use.

Runtime & Outputs

For my runtime graphs here I used the included Wurkkos 3000mAh battery and made sure it was fully charged each time. The driver is non regulated FET, and features a timed step down, after that output is linear to the cells voltage. I didn’t notice any slow PWM in the lower modes for this light and have equipment coming here soon so I can measure this on future lights. When it arrives I plan to update my blog post so make sure to check that out.

Turbo is listed at 1300 lumens and started to step down at about 75 seconds and was fully decreased to right about 25% relative output by 90 seconds. From here the light was a very linear decrease out to 425 minutes of runtime where LVP kicked in at 2.825V. I ran this test both from turbo and just high and got very similar outputs. You don’t see that many modern lights that have output graphs that look like this. It’s a cost cutting measure. Personally I would pay a few more dollars to have a regulated driver.

Heat was well controlled during my runtime tests. At 1 minute I measured 85F, at 5 minutes I measured 87F, and at 10 Min I masured 90F. This is actually pretty cool for a modern light.


Official outputs are listed as following.

  • Turbo 1300 Lumens
  • High 700 Lumens
  • Mid 300 Lumens
  • Low 50 Lumens
  • Eco 2 Lumens.


The Wurkkos FC11 has 2 UI options for people to choose, a stepped (Default) or a ramping. To change UI while off, hold the button for 3 seconds and the light will flash twice to let you know it’s switched.


The light ships by default in stepped mode, and it’s fairly straight forward. From off, tap to turn on, and tap again to advance in mode. You have eco, low, mid and high as part of the normal modes of operation. To turn off Long press when on. Double click to go to turbo, Triple click to go to Strobe, and 4 clicks to enter and exit lockout. The light also has memory mode for the single click modes. This is all pretty standard but at first I found myself clicking and holding to advance modes as many other lights do but this light doesn’t.


Ramping mode Is fairly straightforward, the light starts low and ramps up quickly to it’s highest output in about 1.2 seconds, and flashes to let you know it’s at the top. If you release and then press and hold the light will decrease in output in the same amount of time flashing to let you know it’s at the bottom. You can stop at any output and then click again to reverse the direction you were going mid mode. The same shortcuts of double clicking to go to turbo, triple click to go to strobe, and 4 clicks to enter and exit lockout work here too. There is no hold from off to get to low mode like you see on some lights when in ramping. Not a deal killer for me. 



Recharging here is accomplished via USB-C on the light itself. Unfortunately this requires a USB-A to C cable and USB-C to C is unsupported.  Charging of the 3000mAh battery was very linear during the 4 hour and 37 minutes it took to go from LVP at 2.825V to full at 4.13V. It almost immediately went to charge at 1A and then declined slowly and linearly creating a very linear but not the most ideal curve for a lithium battery. The lights electronic switch flashes fairly bright red while charging and then goes solid green when charged. The light will operate in low mode during charging. 



  • USB-C charging but not USB-C to C.
  • Samsung LH351D Neutral white high CRI Emitter
  • Very affordable price for a complete package
  • Magnetic Tail 
  • 2 UI options to choose from, stepped or Ramping



  • I would prefer a deeper carry pocket clip option, if so this would make a decent EDC option. 
  • Some people have reported a bit of tint lottery with the LED. 
  • Non regulated drive, After initial step down the output is lower and linear based on voltage.
  • Dual springs would reduce the small amount of battery movement noise. 



I will be honest, when I first saw that Wurkkos was offering me this light, I didn’t know who they were and didn’t think much of it initially, but I am glad that I looked closer and ultimately said yes to get my hands on it. For $30 at time of filming, a neutral tint, high CRI (90 CRI) emitter, onboard USB-C charging and an included 3000mAh battery, I am impressed. This would make a great gift light to give to someone as a first real flashlight or a good way to experience the Samsung LH351D LED if you haven’t already. While the ribbing on the body isn’t revolutionary it’s nice they decided to do something different to make them stand out a little bit from the other knurled lights on the market.


This is going to be my budget 18650 recommendation for people new to the hobby or want a beater light until I run across something better. This is a high value combination, good emitter, 2 solid UI choices and a complete package deal. It’s not perfect but the positives outweigh the negatives. Maybe we will see a slight revised model next year like we have seen from the likes of the WowTac A1 to A1S and they will fix a few of these minor things and stick in a regulated driver. Overall I recommend the Wurkkos FC11 and look forward to see what they do next.


Wurkkos has provided a discount till the end of the month to my viewers that I have in the description below this video, so if I have piqued your interest in this nice value flashlight be sure to check that out and save a few dollars while your at it. 


Purchase the Wurkkos FC11 on Amazon at https://amzn.to/382Eqm7 

Use the code U3E8R39N at checkout for a 17% discount


Full Image Gallery https://imgur.com/a/cx7CfgE