I confirmed with Matt there will be a 519a version once they fix the issues with vf on moonlight
this post was submitted on 13 Jan 2026
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Do you mean that they changed from the 519a to the current led, because of a difference in Vf instead of just wanting more lumens? Hmm interesting. Are the leds in series like with Hank's boost drivers if I understand it right?
Tbh it's probably preferable to do moonlight with the aux leds instead of the main ones.
No the TN3535 will still be the first batch of lights released the 519a will be out later I don't know how the mcpcb is designed sorry
I understand that. The original plan was 519a and then they switched to TN3535. So I'm wondering why they switched. My original thought was simply that they wanted more lumens. But because of the mention of Vf, I wondered if there is a Vf difference between TN3535 and 519a, so it was easier to get the boost driver working at low power with the TN3535.
Is moonight done with PWM?
Is moonight done with PWM?
It's a boost driver with PWM input, probably low-pass filtered, but from what I heard it's rather unstable.
Thanks. I'm not sure much is being gained from these boost drivers. FET drivers work just fine with 519a's. Another good flashlight becomes a victim of lumenitis I guess.
TN3535 is brighter than 519 to our Chinese manufacturers they seem to think more lumens more sales
Aha yes, I call that disease lumenitis. It affects US buyers too.
Boost drivers have a big advantage: Much higher efficiency, especially on low brightness. There are great examples like drivers designed by thefreeman or loneoceans. Unfortunately Wurkkos' engineers are still learning.
But the TS26 is quite inefficient at the lowest brightness. Maybe the other drivers you mention are better. Is low brightness efficiency even important? If there's 4V of battery voltage and 2.8V of LED Vf at low brightness, a FET driver loses 1.2/4 = 30% of the power. So instead of 1000 hours of runtime at 4ma you get 700 hours. Does anyone care? The MCU uses a little bit of power but there's no boost circuit using energy. Are low levels done with PWM? Maybe that helps efficiency a little.
Has Wurkkos done boost drivers before? Any probs? It's interesting that they'd embark on a new driver design for an Anduril light. I had figured the TS26 was just an Anduril variant of the TS26S that was mostly the same.
Power consumption in ultra-low modes is usually mostly something other than the LED and power conversion process. It's often the MCU, which Anduril tries to minimize with low-power modes when they're available, but they're not always available.
An efficient power conversion step (almost always a buck or boost switched-mode power supply) is most helpful in medium-low to medium-high modes where 20% more runtime matters on realistic time scales. A 14500 EDC light that can do 300 lumens for two hours instead of an hour and a half is enough improvement I don't feel like I need to bring a bigger light in a lot of situations.
It also means less heat and higher sustained output, which is likely a priority for those picking the larger 21700 size.
Can't quite make out if the pocket clip can be flipped the other way around or not. Odd choice to put it thay way.
Looks to me like it clips both directions.
Technically yes but I personally think these two-way clips work much better the way they're primarly intended to be used.
Oh I see now what you mean. Perhaps it needs the most strength when clipping on to a hat brim or something.
A 122mm, 175g light on a hat brim seems like a stretch, but yeah, there's a pic on the Wurkkos page of it being mounted that way.