Before I get started - what battery are you using?
1) Double-press from off is to go to top of ramp - when the light is on, a double press goes to turbo. If it’s turning off, it sounds like you might be using a protected battery, so it’s tripping the protection. A FET light going to turbo can pull >10A easily.
2-4) Odd. I wonder if a reflash of the firmware might help, but that’s a decently big job if you’ve not done it before. Might be worth finding someone in your area who knows how, we’re a pretty friendly bunch here. Whereabouts are you located?
For the 1st point, I suggest you go with Samsung 40t or equivalent. This light is more or less comparable to D4V2 sst20, which pulls out 15-17A at turbo (double click after the light is on).
I messaged the seller on aliexpress, I hope they will send me another one or refund me full price.
I am dissapointed with the light output of this flashlight.
I still more like my old changing color IF25 and theese days I thinking to order Anduril version but i think IF25 is very good 21700 host. Seems the MOSFET transistor of driver is burn out, because second channel doesn’t work at all.
I’ve run both the Sofirn 21700 (4000 mAh) and Molicel P42a on my new IF25a and they both drive the light well at high and turbo. So I don’t think its a battery issue.
I haven’t dug in yet to Anduril though and I have a ramping issue where (after warming up)… the light bumps down to a very low setting almost immediately. Yet, when put back into step mode (or whatever the factory setting is called), the light stays on wherever I leave it. Even turbo keeps up well without a noticeable reduction in lumens despite the light running pretty warm (can’t touch the head bare handed after about a minute).
Might put Sofirn on notice as you work on these issues.
OK guys so I tried 40T battery and nothing changed, my flashlight is broken, I am in contact with Sofirn on Aliexpress and they wanted me to send a video showing the problem.
I don’t have much experience with Aliexpress, can you guys tell me if I should confirm the goods received and open a dispute or leave it as it is?
Nothing wrong with opening a dispute. In the past I regret not doing so with the Ali_express Sofirn folks… but won’t go into that now. It is a formality and nothing more than a notice something is wrong. I’d guess they would make good as it’s all above the board here (and on the BLF record).
You deserve a working light and Sofirn will make good on any verified defect with a clear record of the issues you’ve had.
Ok guys, I am officialy very dissapointed with Sofirn Company.
I was messaging with them on Aliexpress, I explained them what’s going on, I did send them a videos showing the problems, and after all of that their engineer told me to fully charge battery.
I told them like 3 times that I tried two different batteries (samsung 50E and 40T) and I fully charged both of them.
I suggested that probably FET driver is broken to which their reply was “if the driver is broken then flashlight wouldn’t work”.
I told them that is seems like flashlight works only in regulated mode, to which they replied “my friend, check instructions carefully, this is not a quality problem”.
And that’s it.
They are saying my flashlight is fine, when I clearly can’t use Turbo, Bike flasher, Party Strobe and Tactical Strobe.
Did any of you had similar problem with Sofirn company?
I have buyed so many lights from Sofirn Aliexpress store. Sofirn SP36, C8G, SP10S, SP33. Also order from them spare parts for my SP36. So far I have only one issues when order my SP36, there was a quality marks of anodization. I told them about problem and they answered me that it is not problem for light functionality and in end I just order spare SP36 body tube. Most of time they are responsive. If you can make video of issues just send it to them. If you do not reach a solution to the problem you can directrly open dispute on Aliexpress for refund. Maybe best option for you will be partial refund, because if you want full you must shipping back your product back to China which in most cases is unprofitable.
I have won Aliexpress disputes many times for very cheap product so Aliexpress protection is very good at all.
Edit 7/7/2020: Funtastic kindly shared Anduril links with me and today I finally dug into Anduril. The IF25a is acting normal now and after testing tonight it is clear I needed to “reset” the temp sensor which was way off from the factory. I still need to work on (correctly) setting the smooth ramping upper limit though. This light (in summer right now) is too warm in the bare hand to run on high for more than a minute or two. And turbo really heats up faster yet!!!
I see this being a nice SMALL EDC for my day hunt pack this winter (replacing my Sofirn SP-10, another great little light)! It’s a smaller pack so smaller lights leave room for (another) beer for the tree stand. And if I get cold hands I can whip this out, turn on turbo and warm up my hands FAST
Temperature offset is common problem with Anduril flashlights. I don’t know why they didn’t make factory temperature calibration before sending flashlight. The problem is with MCU temperature sensor which is very inaccurate and have big tolerances between MCUs. From Attiny85 datasheet “Typically, the measurement accuracy after a single temperature calibration is ±10°C, assuming calibration at room temperature. Better accuracies are achieved by using two temperature points for calibration.”
I can’t say that ±10°C accuracy is best at all, and that it is after calibration.
