Quick bump for an update : my HC30 is now equipped with an Olight S2 clip (longer than before) with rectangular neodymium magnets in some heat shrink :
I also swapped the emitter for a T5 5D1 80+ CRI from INTL outdoor, and add some GITD putty under the TIR :
Cool mods!
You can unscrew the front bezel to change the LED but its easier to use the same MCPB and just swap the emitter. My HC30 is my most used light it has heaps of hours on it from fishing and i use while working on electronic for extra light. I love it!
I kept the stock MCPCB as the wires are really short and can’t accommodate a Noctigon…
I just got my HC30 from BG.
It’s the NW version and on turbo the head heats up quick.
Arround 57 degrees “after 2 minutes” the ATR kicks in and I don’t see any drop in lumens with the naked eye.
It keeps it between 50 en 53 degrees, I love it!
Kept it running on turbo for 5 minutes and took the 18650 out.
I used a 3200mAh panasonic with protection and measured the heat of it.
It was 32 degrees.
Is that a safe temp for a 18650? I mean could I run it for 30 minutes on turbo?
Just wanna be safe.
Oh also you can wear the headband inside out so it is all black.
Edit: but I guess you can do that with any headband…
32 °C doesn’t seem a high temp at all for any battery 
If the light is about 50°C once it stabilizes, then the battery will eventually be at that temp too.
Isen’t that really damaging to the 18650?
We’re on the high acceptable temp :
Thanks for the info!
It really is towards the edge though, to near it for my comfort.
I shall not use turbo for more than 1 minute then.
