The Unofficial DongDongHai(DDH) info thread and the Dongers lounge ;)

INeedMoreLumens · May 15, 2026, 4:18pm

Are there 2 different versions? 1 for F8A/B and 1 for other models that don’t need fan control?

billy_s · May 16, 2026, 2:29am

It will soon be available on Taobao “阿刁光電工作室”

billy_s · May 16, 2026, 2:35am

There’ll be two versions, a refined v4.0 which has 4-layer PCB, capable of 30A+ Buck and 250A FET, at a cheaper price. And v4.20 that’s 6-layer PCB, capable of 40A+ Buck and 300A FET. Both equipped with fan controller.

worrub918 · May 16, 2026, 8:36pm

I have a D8D inbound. It’s a 47mm driver with no fan. What driver would you recommend for it?

elemental · May 17, 2026, 7:08pm

I have modded the D8D with both SFY55 and NBD110 LEDs, and the 47mm XBY 30A/250A driver worked fine, but that was all I had. I guess ideally you would want the driver that has the most regulated current available, since both those LEDs will pull 40A no problem, so the more the merrier.

TheFliris · May 18, 2026, 11:48am

I ordered an F8B through Superbuy, it’s with the agent now (got the inspection pics) and should hopefully ship soon.

Can’t wait for this insane wall of light

Running it with an EVE G16 46950 because I couldn’t easily get a 46120 battery to ship here sadly.

savagemann · May 18, 2026, 4:13pm

@worrub918 I’m not 100% sure, but this may be the v.4.2 driver @billy_s was speaking of.
Paste into SB home page.
https://www.superbuy.com/en/page/buy/?url=https%3A%2F%2Fitem.taobao.com%2Fitem.htm%3Fid%3D1032249692190&htag=pc.en.shop.34042188&nTag=pc.en.shop.34042188

worrub918 · May 18, 2026, 5:10pm

Thanks! That’s exactly what I need

savagemann · May 19, 2026, 2:41am

Got my D5F and SFP55 - 5500k today!
I really like the look of this spring. I think it will be easier to bypass.
Lets see what this driver can do!

worrub918 · May 19, 2026, 6:10pm

I love the look of that light. It’ll be the next DDH I purchase.

savagemann · May 19, 2026, 7:34pm

Yeah, it’s nice. I got a 26650 extension for it incase I want to do a 6v build.
I also have a 26800 extension for it.

savagemann · May 20, 2026, 5:06am

I got the D5F built up.
I had a few hangups with the driver build, which I traced down to a bad initial flow on the hot plate.
I eventually got it all ironed out and completed the build.
The new springs I’m trying are really easy to bypass/solder leads to.
Man. This SFP55 is retina searing!
I settled on the 26800 extension with one of the Convoy green cells for now.
I’m starting to get the hang of Anduril. I really like it. I think I want it in all of my lights.
I have a few more DDH hosts on the way, a couple of which should be here before the weekend.

ETA: Beamshot comparison

billy_s · May 20, 2026, 3:06pm

Revised triple 110110 MCPCB for D7F, now with improved trace

texas_shooter · May 20, 2026, 3:38pm

This 26800 gives a bit more current with a little less internal resistance and capacity. https://illumn.com/batteries/26800.html
I notice a slight visual difference with high current lights.

savagemann · May 20, 2026, 3:42pm

I actually just recently ordered 2 of those, but haven’t tested them yet.
I’ll get one charged up and test it soon.

savagemann · May 22, 2026, 5:09pm

Yesterday I received an order from Superbuy, which contained a bunch of goodies.
I had a few DDH hosts and the NBD110 Daydream 4500K high cri leds in the package.
I built up the DDH M4B and put one of the Daydreams in it, along with one of the @INeedMoreLumens 32mm Fet+1 drivers I recently built.
The Daydream is beautiful. I like it a lot. I’m not a major tint guy, but I find this to be perfect.
The M4B has onboard USBc charging built into the battery tube. The natural M4C does not have built in charging, but has a slot for a driver that has USBc. The quality of these DDH hosts is top notch. I’m hooked on them.
A few pics and unscientific beamshot comparisons.
ETA: For reference, the M21a pic has a fet driver that hits around 36-39 amps depending and battery.