Sofirn SC31 PRO, New Anduril Flashlight

Thanks for sharing beamshots! SC31 Pro 5000K looks cold in turbo.

Left to right:
Manker E02II SST20 4000K with Vapcell INR10440 set to max;
Sofirn SC31 Pro SST40 5000K (?) with KeepPower IMR18350 set to turbo;
Lumintop Tool AA 2.0 219C with LADDA AA set to max;
Sofirn C01S SST20 4000K with LADDA AAA set to max.

Left to right:
EagTac T25C2 XM-L U2 CW with EagTac 18650 3400mAh set to max;
Olight i3T with dc-fix and Vapcell INR10440 set to max;
Sofirn SC31 Pro SST40 5000K set to turbo;
Manker E02II SST20 4000K with Vapcell INR10440 set to max.

I’m not sure if I’ve got 5000K or 6500K.

My old Sony RX100II camera thinks the hot spot is about 4500K and the outer bit is 5300K for the Sofirn SC31 Pro 5000K on turbo.

Thanks for sharing more beamshots!
I quess it is SST40 5000K. As far as I know, the SST40 5000K starts at around 4000K in low modes, and becomes colder when you ramp it up. So I think it is fine that in turbo it looks colder.

I added some dc-fix and the beam now looks much nicer. :slight_smile:

Is the SC31 Pro safe to use to charge KeepPower IMR18350 cells?

500mA to 1000mA charge current? Terminates at 4.20V?


ZL SC64c LE, SC31 Pro, GA


ZL SC64c LE, SC31 Pro, GA

I think you can do that with a 500 mA USB power source. Don't use a quick charger. You might have an older phone charger sitting around.

I tried charging a KeepPower IMR18350 in the SC31 Pro.

Discharged to 2.8V.

Setup:

- Wall wart with USB-A socket providing 5V 2.4A output

- USB-A to USB-C cable connecting wall wart to USB-C input of the USB Tester

  • RD UM25C USB Tester with USB-A to USB-C cable connecting to the USB-C input of the SC31 Pro

5V 1.17A initially when around 2.8V
5V 1.09A when around 3.2V

When I switched to USB3 output from a laptop, it dropped to 5V 0.86A.

It’s probably not the best way to test…

KP 18350 1200mAh has a 1.1A max charge. 1.17A is a bit on the high side.

EDIT:

I later charged it with an XTAR VP2 to 4V and then inserted the 18350 into SC31 Pro to charge it more. 300-500mA charge rate. It terminated at 4.16V. I put it back in the XTAR VP2 to get it to 4.19V.

I suppose this is one scenario wherein a lower-rating (older) USB power adapter will be useful…

In general, I often shelve aside lower-current (older) USB power adapters since I want to charge my USB devices with at least 1 Amp or higher.

I have a related question: I have some “poor quality” USB cables that pass very low current, eg. even if I use a 5v/2.4A USB power adapter, it will only charge at 0.5A or lower, compared to when I use a good quality USB cable. Will using a “low-quality” cable to limit the charging current be safe to use?

Not sure. I found an interesting blog post about this:

Well, that explains my observations. I'm glad I have one of those cable testers.

Where’s the best place to buy D-C Fix?

How much do you want? Boaz sells small quantities or Amazon if you need more. The milky is the original.

Thank you

Just wish it wasn’t going to cost the same amount in shipping for New Zealand

Still worth the purchase though!

SC31 Pro with DC-Fix from Boaz:

Video of SC31 Pro 5000K going from Turbo to low with DC-Fix:
https://i.imgur.com/mwD14jH.mp4

Yeh, I’m leaving my ’pro as-is, but most of my other lights that aren’t dedicated throwers (GTmicro, etc.) all get “fixed”.

Even the big Tacklife I got has a G3 with all its hideous tint-shift, but is nicely throwy… if you want that. Makes a great around-the-house light with diffusion film in front, a nice smooth blanket of light, and no shift.

The ’pro doesn’t really need it, but it can certainly come in handy.

I’m wondering if the SC31 Pro ordered from Sofirn AliExpress includes 2 tailcaps (1 nonmagnetic + 1 magnetic)?

I’ve ordered the SC31 Pro 5000k tint from there, but the shipping is taking quite long, so am curious if it will come with both tailcaps or just 1 tailcap (if 1 tailcap, is it the nonmagnetic or the magnetic one)?

I had previously ordered the SC31 Pro 6500k from another Sofirn site earlier (when the 5000k was not yet released), and that set came with 2 tailcaps, was curious if the set from Sofirn AliExpress will also include both tailcaps…

I ordered 2 SC31 Pros from AliExpress and both came with only 1 tailcap, a nonmagnetic one.