This is indeed über. Compared to the good ol' 219Bs, increased power/current handling and efficiency for close to double the peak light output, coupled with even lower Vf…
This is a reeeally nice upgrade for lots of inexpensive flashlights, capable of transforming a dud into a jaw-dropping experience. Top notch WOW factor! :LOVE:
Remember, the manufactures reccomedations for max current are all base on non DTP attachments. Sure, we overdrive them beyond what they might be rated at even if they were spec’d on DTP copper but we couldn’t achieve what we do if those specs were absolutes.
Yup, and I love it in a trip. I used 20 awg wires and removed tail bypass to get it down to 11.55 amps. It started at over 16, to much for a titanium host.
Well, I went for 16x AMC7135 now. But I don’t know if I’ll leave it that way, this drivers gets freaking hot. No wonder though, about 5W or more getting dissipated. Have to do some more testing. Not a good idea to use high drain 18650’s, obviously…
yup, I tested with fully charged LG HE4, not what I’ll be using in the finished light. Will use a protected 3500mAh cell, so the excess voltage won’t be that high.
The modern 3500mAh cells should have no problem with that current. I think it’s better the whole cell gets warm a bit from within than having the driver in front of it running hot over 90°C.
I am not sure which one the 90CRI are binned as technically to be honest.
Seeing as the D320 came up very close to spec (slightly under 320 lumens at 700ma) and the 90cri came up closer to D260 (a bit over 260 lumens @ 700ma), I am thinking they are either D260 or very high binned D240’s.
IIRC Ray said his 4000k 90CRI emitters were D260 so they do exist.
Rey (WWEFANS) had a full reel of 90CRI 4000K 219C leds and sold them via PM, but I believe he is sold out atm. Then there is a sale thread by clemence for several types of 90 CRI 219C’s, round 1 and round 2 is finished, but there will be a new round (and new thread) one of these days.