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).
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.
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.
Yes - the IF25A is in only. Just proves the power bank feature of the HD20 does work, least on some USB-C connected devices.
The HD20 charges from a USB-C wall adapter (full C), but doesn't work as a power bank to some USB-C devices, most likely the devices that are true USB-C. The IF25A is the typical cheap USB-C, meaning doesn't charge from a USB-C wall adapter.
I don't know how, or maybe don't have the right equipment to measure charge voltage and amps on USB-C. Any suggestions on how to do that?
Good. Everybody should have that type of equipment. The one I have is older and only does USB in and out so I’m going to have to get one that does C both ways also. It’s invaluable to be able to look at phone charging issues battery charging issues all around.
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.
Hey Wurkkos. I ordered the HD20 with the battery and it seems to have a flashing red during a 90 minute charge. The charge indicator never turned green. Via the manual it says the battery is critical so I tried swapping it out with another battery and the problem was not resolved. I ordered the light off AliExpress on 11.11.20. Any advice on this issue would be appreciated. Thanks.
My FC11 is a solid red when charging. I looked around and found info regarding the below. I don’t think my battery would still be below 3% after a hour charge. Also the other batteries tested were running well in other flashlights.
3% > Flashing Red
30% > Constant Red > 3%
Constant Green > 30%