KC1 keychain light is available now

I wouldn’t get anything besides the Panny 18500….and if you want it protected for whatever reason, Keeppower has them under their label as the P1850C3. I picked up a pair of them at Illumn but I think Aloft Hobbies had some, and Liion and a couple other stores seemed to be out of stock forever. I’d be hesitant to order these from aliexpress. The china cells all seem to be crud for this size but I’ve never owned any of them myself.

18350…I’ve got the Vapcell green F14 3A 1400mAh (it’s a tad less than that) for a little higher capacity in some lights and the Keeppower UH1835P 10A 1200mAh for others (not sure what’s in the Keeppower but it’s a really capable cell with great capacity for the drain).

I don’t know how the 18500 would fare in that light…should be well enough but if you are fond of turbo or running for longer periods of time it might fall flat a little bit. The Pannys are good cells, though.

18650…Sony VTC6 or Samsung 30Q or the Molicell similar ones are great. If you usually stay out of turbo or use it for shorter periods where the voltage can bounce back up, the 35E and similar higher mAh cells might get you a little more run time overall. If you run the 35E and such at higher currents often, the actual capacity will often be a washout where you might as well get the higher drain lower capacity 30Q instead.

Yes of course. Vaccination won’t prevent you from catching COVID, nor does it act as a reliable barrier to stop transmission. But symptomatic people can be more transmissible than those who aren’t. If the vaccine minimizes symptoms then it’s helping to cut down some transmission.
Keeping in mind about disinfo and politically related inferences not tolerated here, note that all vaccines have some side effects. And yes, some people can have bad reactions. That’s the reality for any vaccine. I’ve had side effects with every vaccine I’ve gotten. Just feeling low energy, tired, body aches, and on my 2nd inoculation I stayed in bed for a day. Within 24~36 hours, totally fine. No lingering symptoms. No worse than a flu shot. I haven’t gotten COVID. My housemate got it. Two members of my family (who I don’t live with) got it. I’ve socialized with people who had it and recovered. I’ve been generally good about popping on a mask when in close quarters in public, except for restaurants with anti-viral ventilation systems.

OK, ’nuff said. I don’t have anything more to add. Thank you.

I’ve bought from 18650BatteryStore, Illumn, and BatteryJunction. I don’t know what’s going on with shipping, but some sites are charging outrageous shipping fees for batteries now. I was looking to get a few cells and while preparing to check out at Illumn and preparing for a $7~8 charge, it was $16. Same at LiionWholesale. JLHawaii808 seems to have better pricing. But, they don’t have a few cells of interest.

Hi, the lock down in my area is over, we will start to send the exsiting orders tomorrow, thanks for your patience.

When boost driver with dual channel ? :open_mouth: :open_mouth: :open_mouth:

Glad to hear you can move and operate with freedom again. Won’t it be nice someday if covid evolves into something less concerning/contagious? I remember what that used to be like. lol :slight_smile:

With freedom? In China? You’re funny



It's available

Is this the latest hex for D4S nichia? anduril.2021-12-13.emisar-d4s-219c.hex

Where to find thinner DuPont cables for the flashing holes?

hey hank, is the SWITCH RETAINING RING in the D4K Ti screw in, and only one height? From that picture I can't tell if it flat, or raised.

Hi, yes, it’s screwed in, the switch is a bit recessed in the head.

Hi Hank,

Is it possible to buy an aluminium D4K with a threaded switch retaining ring like the D4KTi has?

EMISAR D4KTI COLORFUL is here, but hank, we really need a high resolution close up for each finish.

Holy shit even the switch retaining rings are anodised!


I believe, it's not a anodisation, but fiber laser.

Colors are nice but you can’t beat brass or copper.

Re: D4KTI

Since titanium has worse thermal heat dissipation than aluminum, would it make more sense to add the boost driver here?

I bought the aluminum D4K with the boost driver add-on. Compared to the FET driver, the maximum output is lower. On the other hand, the output is better regulated. Is there any chance to increase the maximum current? I think someone mentioned 2A per LED as the default current.

D4KTI colorful version is available

Hey Hank, the D4KTI colorful D. Circuit have some markings on the copper head. It that also done by laser? Can you color the copper head too?

Does anybody know what kind of sustained output a KR1 gets with 70.3 HI? And has anybody been able to measure the duv of theirs?