Not sure what you mean by this - the blinking?. If so, I just tested it - didn't realize A2 uses the low mode to flash for voltage and temp readings -- that's bad with this light, so no, not very practical, least not in room light.
I did swap the 100 ohm 0402 for a 8.2K resistor and now I'd say the amber switch LED on hi is somewhat less bright than I'd like. The parasitic drain did go down from 13.5 mA to 1.3 mA, so knocked it down, but still not in what I would consider an acceptable range. Weird, not what I was expecting... Was hoping to get the drain down further, but bright enough to be useful. Also the low setting is maybe slightly lower than it was before, and that's not noticeable in room light, but can be seen in the dark.
So at 1.3 mA, it will completely drain a 4000 mAh cell in 128 days - better but again, not acceptable.
They sent me a 5000k when I ordered a 4000k. I also have the random charge light issue. Despite the flaws I quite like the light, but I do hope they’ll respond to my support email.
I think it’s happening at least on all Sofirn made Anduril 2 flashlights, my new Sofirn Q8 pro has the amble light comes on and off during the usage too.
It’s supposed to indicate the power bank function only.
Yeah mine has that pitch thing too. My Sofirn SC31 Pro has it as well but the TS21 is louder. I’d like to point out though that it’s also possible that the ceramic capacitors (of which there are quite a lot according to a TS21 teardown), with their big internal surface area can act as loudspeakers. Just a quick “the more you know” fact haha. But the coil (maybe in conjunction with the capacitors) and the high switching frequency (but in the audible range) can cause it too
Mine does not whine on turbo because the circuitry doesn’t switch. AFAIK in that case it’s just the battery through some mosfets straight to the LED. On higher “regulated” outputs I can hear it, and it gets louder the higher the light output is.
That’s why I was asking,
I had experienced it with another light when on turbo
Just wanted to make sure their issue wasn’t the actually normal.
Btw. My red ts21 so far seems fine. No noises, I have the aux is turned off and the switch light increases brightness with ramp level while in use like it should according to the instructions
That's kind of like complaining to the doc "my arm hurts when I move it", and the doc saying "then don't move it".
I do like having a switch LED and is certainly one of the reasons I bought this light, but at least we have this option to turn it OFF as a work-around solution.
D4V2 here: https://1lumen.com/review/emisar-d4v2/ where all the colors are measured. The OFF # is right where it should be at 25 μA (20-30 is expected), while the green and blue are somewhat reasonable in HIGH, and the low #'s are all reasonable. I'm not sure how many LED's but I believe it's 4 per color.