I have a question for those of you who ordered SF3 can you guys running the light on turbo for more than a minute without any flickering? I don’t know how to describe because it is not a step down, more like a PWM. It could be the cell but I’m not sure.
I spent some time testing with a few various 16340 cells and couldn’t get mine to do what you described. I didn’t test it with a meter, but I can tell it’s pushing the battery pretty hard, and I could get it to trip the protection circuit on a couple cells and shut the light off. It does seem to step down after about a minute. Once I thought I saw what you were describing but I put it on my phone’s camera and it could see it. In fact, my camera shows that my SF3 is quiet as a mouse with respect to PWM or circuit noise.
The SF5 NW just came in from WallBuys today. It shipped a couple days earlier and arrived a day later, so hkequipement is the shipping winner here. Both are fantastic lights and I’m so glad I put off buying an SC52. The SF5 NW has a slightly warmer tint than my SF3 NW and I like it!
So far the photos are coming out nice. Here’s a teaser shot:
I tried again draining the battery but this time only on high. The protection tripped after 55 minutes without any flicker or noticeable step-down. Comparing to this graph taken from a review, the result seems spot on. I may need to try again to see if there any in turbo mode.
Mine arrived today. I ordered it on the 8th, so that was fast.
I’d like to thank JMPaul and HKE for doing this. I arrived in this thread after the GB was already going and they graciously allowed me to get in on it.
I ended up getting the SG5 headlamp, but given the build quality, I only wish I’d give into temptation and gotten the flashlight as well. I’ll post up a picture some time this weekend.
mine came today as well - i got the sf5 flashlight - hkequipment included a thank you to me for doing the group buy along with a fenix e01 bonus light - i had no idea they were going to do this and it was a very nice gesture
sounds like a potential issue - i would try charging the cell and see what happens… or perhaps try a different battery to confirm - if it persists email hkequipment for a RMA
Stung for custom charges that almost negate the GB discount, but still worth it!
Only had the lights a few minutes but i like them, seem like nice, solid, ‘no fuss get the job done’ lights, and if i’d realised how easy it was to change the emitters i probably would have bought more for gifting. Might still do.
Thanks again jmpaul, and glad you got a little bonus.
One question, does anyone know how to remove the lens? (as in the actual piece of glass.) It looks like i need to unscrew the silver metal bezel, but can’t see any way to grip it.
I did try again after charging the cell and then ran it on turbo. The low frequency flickering happened after 17 minutes. Pulled out the cell and the voltage was 3.8V. I’m not sure what to do now just waiting for my new cell to arrive.