What did you mod today?

Why not use a 40152 for itā€™s 11000mAh capacity? :smiley:

Whoa, impressive!

Whatā€™s the skinny on these 40152ā€™s? Best brand, where to get the good ones, ect.?

First I ever heard of them, how would you (Enderman) use them in / for a build? http://www.headwaybatteryandcable.com/products/20120301569.shtml

It is a LiFePO4 battery so nominal voltage 3V instead of 3.7, that makes its use a bit special.

Special, like using a boost driver to increase voltage?

Could be needed, or use two in series with buck driver.

Or for a modern led like 219C, XP-L2 or Luxeon V, a LiFePO4 cell together with a lineair or direct driver will form a very efficient flashlight, although the led will not quite be driven to the max.

You can get them here and they are the good ones:

Otherwise you would need to get them from aliexpress, and that would require a minimum order quantity, complicated shipping and import papers, etc etc etc.

3.2v actually, but yeah you would need a boost driver for most LEDs.
For me, even with a 1s flashlight I would like a boost driver because I thoroughly hate direct drive.

I think it would be pretty crazy if someone built a flashlight to use these massive batteries though :smiley:

I modded a Utorch UT01 with a new led, eventually it will be a lantern. (mod thread in progress)

The Phoenix arisen!

Itā€™s been a while since I started to think about this, but as I am not a chemist, I took a while to perceive that I had at home all I needed!
So, today I decided to mod the Sofirn SF10 host!

Materials used: 1 glass; caustic soda; cold water; latex gloves; tweezers; goggles; plastic tape!

Before and after :sunglasses: I like it more now :blush:

Inspiration:
Anodisation removal on flashlight battery tubr - YouTube (Thanks djozz !!!)
removing anodising

wow nice work MascaratumB

can you tell us more how u did it :slight_smile:

Edit: typo :smiley:

Sure;) I followed djozz video in some things, so the process was quite simple, despite the precautions that must be taken.
In detail:
1 - I took everything out of the flashlight (internals, o-rings, clip)

2 - I put black adhesive tape on the threads to avoid water from entering, BUT during the process I ended up taking the tape out because this particular host can be ALL stripped, inside and outside, as there are no ways to make ā€˜shortsā€™, and the threads donā€™t allow physical lock-out. They are not anodized.

3 - I put some ā€œpearlsā€ of caustic soda (I had a bottle of drain cleaner, to clean the kitchen or WC pipes) inside a glass and added some water. I mixed it up smoothly (already with gloves and googles, to avoid skin contact).

4 - Then I started to put the flashlight parts inside the glass and checking how they were! I often cleaned them with flowing water to check the state, and re-inserted them on the glass. I also used an old tooth brush with the solution in the glass to ā€œpolishā€ the knurling in some points. ALWAYS WITH GLOVES :wink:

5 - When the parts were all ā€œde-anodizedā€ I washed them with flowing water and dried them with kitchen paper. After this, I lubricated the threads again and put everything back on its place :wink:

I took few photos as I was with gloves and with caustic soda on the hands soā€¦ :smiley:
Here they are :

Hope this helps, but feel free to place any doubt :wink:

thanks man.

im going to convert all by black flashlights to white (without being racist) :smiley:

Iā€™ll probably end up trying to make this in other lights as well!! Even my girlfriend said this light was prettier :blush:
Please be careful with the ā€œneededā€ anodization, like threads or other important parts! :+1:

OH: One thing I forgot to mention is that I made this in my kitchen and I kept the exhaust ON to help on air ventilation!! The smokes and vapour and smell is quite nauseous!!

I got my first BLF Q8 in yesterday. It looked fabulous and worked the same, making 5409.6 lumens right out of the box on a set of Sony VTC5A with copper buttons soldered to the top. But of course, I felt like 5000 lumens was too weak, soā€¦

I started off with small changes and checked for the differences with freshly charged cells. Like, I swapped out the screws for brass ones. Boom! 328 lumens for a mere brass screw installation. So I tried an UCLp lens swap, not so much gain, only 41 lumens, not worth buying a lens for. Then I pulled the pcb with springs from the tail, removed the dual springs, and re-flowed them onto a copper sheet cut to fit the tube. That netted another 93 lumens. So then I put 22 ga wire bypasses inside the dual springs. Tedious stuff, that! And it made the single most difference, 1214.4 lumens gained for the effort! :smiley:

Then I decided to get real, I pulled the driver, replaced the leads with 18Ga Turnigy wires, removed the MOSFET and used a premium Vishay SIRA20DP, swapped the XP-L V6 3D emitters for new XP-L2 V6 1C. And a whopping 3000 lumens gain!!!

Yes, the Q8 started at 5409.6 and did 5213.64 at 30 seconds, now it makes an outstanding 10,212 lumens at start with a drop to 9,177 lumens at 30 seconds. I donā€™t have a way to measure amperage, but I donā€™t think I really want to knowā€¦. :wink: (of course I know how, I just donā€™t want to!) [based on previous experience, amperage is going to have to be up around 28A to maybe 30A, ridiculous, I know]

Nice Work MascaratumB :+1: same as mine here, Stripped with Caustic Soda, I also shorten it a bit. :slight_smile:


Nice work there, too :smiley: I guess I wonā€™t shorten it due to batteries and springs, but thats nice :wink:
I also thought about a illuminated tailswitch, Iā€™m going to buy one for this and maybe for other lights :stuck_out_tongue:
And then, driver and LED modification!
Thanks for sharing :+1:

Swapped a V6 bin LED for a V6 bin LED and gained 3000 lumensā€¦ :smiling_imp:

Since you did it all at once, what is your gut feel on how that 3000lm breaks down?

18Ga Turnigy wires: x%
Vishay SIRA20DP fet: y%
XP-L2 LED (lower Vf): z%

Yeah sac02, I kinda wish Iā€™d followed what Iā€™d been doing and done one thing at a time and measured in between. The 18Ga wires probably helped a little but I wouldnā€™t think thatā€™d be a big jump. The FET made a difference, more so than the wires, but in the end I think the XP-L2ā€™s were the major change. 700 lumens between a modded XP-L light (for each emitter) means 2100 lumens easily right there in the emitters. Tom had seen around 7100-7200 which was 1800 lumens per emitter, looks like we can attribute most of the gains to the next gen technology. :wink:

Cheap USB (5mm jack plug) 14500 light running NarsilM_1.2

I sacrificed the charging plug and add 10mm Neodymium Magnet :slight_smile:

Bought from AE for $5.19 each

Got a link ?
Looks like a good mod project