5.000 and 10.000 lumen DIY Strong Diving-Flashlight (50 and 100 Watt)

You are right for batteries canister solution and you can see in my video that when I was testing my 50W one into sea water the batteries were in my arm with a DIY canister but I decide that I prefer to hold everything in one “box” especially for the 50W because as you can see is very small and inside water weights about 150 grams
For batteries I decide to use the KING KONG ones from a review that saws they can give 10A for almost half hour with no problems at all , but because the enclosure is big enough for the 100W driver I also use some times a LIPO 3 cell 5000 mah 20S, of course for 50W one there is no problem
Thanks again

Awesome project and great video for demonstration! Really impressive flood. It looks like someone just turned on a few porch lights behind you. Amazing!

awesome project! thanks for sharing 8)

Thanks
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I like this photo , it shows the amount of light that 100W one can give - after all they use this kind of lights for lighting gardens and buildings :slight_smile:

If you don’t mind, could you take a beamshot while you’re standing back about 15 feet from the light?

It does look like it’s pushing out quite a bit of light. :slight_smile:

You can see in my video the same beamshot from distance

Ah missed the video link, thanks I’ll check it out.

I don’t think the apex can provide those 2500 lumens, at least my unit can’t.
I regret buying it…

The reviews says that it start at 2500 lumen and after a while stays at 2200 lumen but APEX is not the issue here
I just use it to compare beam shots

Yes, sorry, this thread is about your custom lights, and I forgot to say they are excellent, would like to see a video of the beam during actual diving, if you ever record one

Believe me after the tests with my 50W last summer I am very curious to see the 100W one this summer
I already have my DYI underwater case (cost ! euro :slight_smile: ) for my 808#16 spy camera
You can check my other 6 youtube videos I believe you will find a lot of interest ideas and patents there and one underwater video (day time)

Nice! You could unsolder the FET's on the board, run some heavy gauge wire to the aluminum body and thermal glue them to the side (just make sure they stay electrically insulated and the wires too)

Can't wait for the underwater video's! :D

You might get better space and aH per volume if you used some of those LiPo square cells vs the big honkering round ones, still...wow...just wow!

Out of stock, but 36V NiMH battery pack (if it would fit)

Thanks
For any kind of battery you will still need one led driver and all of them (50 and 100W) works on 12~24V so this pack isn’t helpful

Oh..that site has TONS of 12/18/24vdc packs

http://www.all-battery.com/24vnimhnicdbatterypackseries.aspx

I must say to you the same that I said to another friend 2 comments before (why I choose one 100W led)
Its all about cost - these KING KONG batteries cost me 8$ each from CNQualityGoods (free shipping)
I also have one more 50W flashlight (my first attempt) with a 3 cell lipo 4000mah Turnigy battery , the battery cost about 35$ with shipping
The reason that I didn’t like lipo batteries for this project is that they need 2 different kind of wires for charging (balance) also is much easier to fit 3 or more cylinder batteries connected with wires into the main body than one pack battery

I am aware that cost is very important to you but changing those generic chinese “100W” led arrays with something more decent (Bridgelux, Cree, Lustrous…) would give you much more improvement regarding lumen output.

Yes I believe they do , but already I decide that 50W is more than enough for almost any kind of underwater light (diving or just fun -like me)
The 100W one I just make it for fun and impress my friends , if you don’t want something very strong for specific reason the 50W one with this amount of light is perfect
If I had to choose something better I believe that cree-t6 (100W emitter) even working with 50W driver will be better
I already made a 50W flashlight for a friend of mine (photographer) that dives to 30 meters and he is very happy with it , until now he had to pay about 100 to 200$ for a decent diving flashlight around 1500 lumen

I remember doing a comparison of a 100W panel (running at 100W on a bench PSU) to a 3x XML light (with the XMLs running at 3A) and feeling like they were roughly on par in terms of output.

The math on that doesn’t quite make sense now that I think of it (100W vs ~30W), but that’s what I remember.

Can you post the link of the 50w driver?
Have you thought using a 12v battery pack (lion/lipo)?

Which one ?
The green one (photo) is more reliable and gives 36V~1.5A (54W) but with one mode and bigger
http://www.ebay.com/itm/50W-Constant-Current-LED-Driver-DC12V-to-DC30-36V-1600mA-for-50W-High-Power-LED-/321153528036?pt=LH_DefaultDomain_0&hash=item4ac63df0e4

The small one with 3 modes suppose to give 30V~2.8A but it gives 30V~1.5A so 45W is from lightmalls and I am not happy with them because they didn’t reply to my complains about the wrong numbers they give - they didn’t even upload my review on their site and it was the first time that happens to me
http://www.lightmalls.com/9-led-series-3-mode-for-three-lithium-battery-led-driver-with-low-voltage-protection

Both fits perfect into the enclosure with batteries and all , if you don’t mind the modes I choose the first one - more watts more light

For batteries read above comments you will understand why I choose these