Great Flashlight
would you please try triple click to change LED modes, the speed of LED change seems more like step dimming not like LED modes change speed.
LED modes change (spot light-floodlight—both) by
1: triple click
2: click + hold
Thanks for the feedback, and we have update to the engineer for checking again.
In the video I tried to change the brightness with long click, but the LEDs were not in sync. Switching LED mode with click-click&hold and triple click worked fine.
copy that, thank you, we will update to engineer and update it on the next batch
Perhaps gets some fins on it instead of the shallow grooves, it looks very cheap. I mentioned magnetic charging because it frees up more head room for fins.
The Skilhunt H04 RC has such a nice look. That’s my demo video for my website.
Ditch the dual LEDs and make a single with a diffuser. There have been quite a few asking Sofirn for an SP40 V2 with diffuser but it never went ahead. Even a diffuser on a hinge like Skilhunt’s failed F model. Great concept but execution was terrible.
this magnetic charging is really cool
Yea, rip off Skilhunt host and sell it for 10$. Im in for few.
Here is the review I did of the light Wurkkos HD20 Review ($40, LH325D, 5000k, USB-C PD, 21700, Headlamp) The manual really needs to be updated to reflect the triple click to switch between LEDs.
Good review
Shows how Sofirn haven’t sorted their thermal regulation issue, this puts me off big time. I can’t understand how Sofirn aren’t picking this up when they’re testing the runtime, how is this missed, or do they simply not care?
See here, my proposal to represent the actual UI:
https://budgetlightforum.com/t/-/62231/269
I will be checking with Wurkkos what parts of the UI will need to be changed in batch #2 or #3 and what can be kept. Once everything is (double-)confirmed, I think the (printed) manual will be updated.
I'm re-posting this here from liquidretro's review thread:
I just tested the HD20 I got yesterday from Amazon (Prime 2 days) on a freshly charged 40T and on turbo got as high as 6.6 amp tail readings on just the spot LED. Amps crept up the more I compressed down on the spring, using a clamp meter with the tail off. The battery fits very tight, so good spring compression on both ends.
My maukka calibrated readings was about 1470 lumens at 30 secs on just the spot LED (XPL HD) both LED's, tailcap on. Initially, the reading actually goes up a little, then didn't drop much at all. This is all indicative of the springs combined with a direct FET driver. I've seen this type of variation a few times before. It's also clearly in the ballpark for 6.6 amps, and the light got quite hot to hold in 30 seconds. So the amps readings, heat, and lumens reading all correspond.
Dunno, maybe I got a new version, or a buggy one, if everyone else got much lower readings on a 40T cell.
My mistake - the bug got me! Dbl clicked ON with prior selecting only the hot spot LED, and the flood LED turned on too, and I didn't notice.
I don’t have a clamp meter but using low gauge wire on my fluke I get 3.3 amps and 6.09 amps both on turbo. Tested lumens again and I can’t achieve more than 1520 for both on turbo
Got burned by the bug: last selected spot only, from OFF, wait a few secs, 2C - spot only should go to turbo, but instead, both LED's go to turbo
So properly tested, my reading of ~1500 lumens at 30 secs for both LED's, calibrated, match earlier posted #'s.
The 130g weight spec'd is the the flashlight and head strap together, no battery. I don't know why they did this, but it's the only thing that makes sense.
The actual weight of the HD20 with no battery, no clip is 87g, not 130g.
Here's proof --
Calibrated base. Need to lift the lights off the scale surface because the tail magnets effect the scale:
HD20:
FireFlies PL47 (78 g spec'd):
Eagle Eye X1R:
Sofirn SP40 (63 g spec'd):
HD20 head strap:
So if you add the weight of the HD20 and it's head strap, my measurements result in 87.0 + 45.8 = 132.8 g, close to the spec'd 130 g weight. I don't know how else to explain it.
I wish Wurkkos would clarify their specifications - this causes great confusion. Yes - the HD20 is a heavyweight for a rt. angle light to be used as a headlamp. But it's only about 9 grams heavier than a PL47, 14 grams heavier than a X1R (18650).
Thanks for your input Tom
Looks like Wurkkos has pulled the HD20 until some things are fixed. Already a negative on Amazon about issues with the powerbank feature.
Can someone explain why manufacturers don’t carry out thorough testing before selling the product? Why do we have to become the testers? In my opinion they should make around 10pcs and send them to testers if they aren’t going to do it themselves. Get the feedback, correct any issues and then release it.
Huh you’re right! It’s gone from their Aliexpress store 
Yeah I agree about testing, one of the reasons the lights are cheaper maybe? But then again it should be an easy fix, I don’t think the cost of shipping a few lights beforehand is bigger than dealing with returns/customer problems…
I agree, but I'm sure there's a great priority given to time to market and a fairly large pre-production run costs money and time. This issue has come up many times on BLF before. Even though new lights seem to take many months to launch, a pre-production run would add months. You also need a really good technical multi-lingual coordinator on the manufacturer's side - communication has been difficult and challenging on pretty much every BLF project we've done here.
I think these bugs are relatively minor. Just having true USB-C charging capability seems rare still, and this light can do that.
I think there is 1 actual bug, maybe 2, in the firmware, and also USB-C power bank not working. The rest is documentation.
Any complaints about iPhones don’t count. Type C is complicated. If I have two of these flashlights, one is at 3.4 volts and the other is at 3.9 volts and I plug them in with a c to c cable can anyone tell me what will happen or what should happen? The same thing with other devices that are C in and out. So don’t expect all power bank issues to be resolved. You want it fast, inexpensive and perfect? The buying season is upon us, they had some deadlines. As far as picking a magical number of testers and asking them to not report their findings to the public? Good luck with that. Google comes out with patches and updates once a month. Many people won’t buy the first model year of a new car. When something is new you take your chances.
Just tested - a HD20 will charge an IF25A
yeah but isn’t the IF25A in only? A recent tester noted it wasn’t C to C and it wasn’t a power bank. So maybe he was partly wrong again depending on the power supply. Also what were the voltages and what was the charging rate (at those voltages as of course it will vary)? This power bank feature “sounds” good but I doubt that people are really going to use this in the real world. Again, iPhones don’t count.