Finally built my DDH-D2GC!

Flashlight Modding and DIY Parts
21

Convoy M21A/DDH-D2GC
Lots of Cooling Fins!

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22

Potato masher

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23

The newest version, DDH-M4C has a USB-C opening on the opposite side of the switch.

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And this is the XBY 32mm buck + FET driver with 22.5w reverse charging.

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Just FYI :grinning_face:

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24

I thought about it but I wanted to run a 6v SFP55(It’s sorta round) the 3v version is square.
I’m going to use the dual 21700 tube(only comes in Black) and a driver I designed for the SFY55.
It should be able to push the SFP55 to maximum Lumens(or burn it up we shall see).

My next DDH host will be the F8A

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25

Cool!
The red switch with ring is very beautiful

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26

It looks even better in person and it’s RGB so the color can be changed.

In this picture it’s Blue:

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27

Nice

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28

Those a very impressive numbers. Have you measured amps draw? I’d like to know how much amps that single LED is pulling to get those numbers.

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29

Not yet. I have a clamp and will measure it soon(hopefully)

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30

That’s one heck of a light. I’m gonna need like 3 or 7 of those drivers. :winking_face_with_tongue:

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31

I suspect the click of the switch is soo satisfying

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Unfortunately the click of the button is the 1 thing I’m having trouble with.
Without the button retaining ring the button is nice and clicky.
As soon as I add the retaining ring the clickiness disappears.
I haven’t had much time to play with it.

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Oh that’s good, the D2GC has a 22m driver right? Quite disapointing, but 32mm is plenty of real estate for a high power DC-DC driver.

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Yes, it’s 22mm like the D4v2

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@Power On with a fully charged Samsung 30T - 4,100 Lumens @14.37A( the highest I saw before pressing the Hold button)
It’s pretty tricky getting Amps and Lumens at the same time.
I used a piece of 18ga Wire and my UT210E.

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36

Thanks for testing and posting. 14 amps from a 3V LED is impressive… at least it is to me. I’ve been gone too long, maybe numbers like this are the norm now days.

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37

I tested the light with a VTC6A last night and got 200 more lumens at power on:

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38

Got any EVE 50PL on hand? I’m really curious what that led pulls straight from the battery although it can’t be much more due to high Vf.

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39

Unfortunately I don’t have any tabless cells yet.
They’re on the list but keep getting bumped for other things

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40

Try to screw slowly the ring until you feel the button is not satisfying and give me a feedback. probably the ring is too tight. Have you put rubber under the cover?