Diode and res mod on 105c

It gets warm running Full power. Even with it on low it gets warmish, but not to the point it unholdable. so I guess i’ll leave it at 8. thanks for the info man.

I love the fact the light get’s so hot, I seen a youtube video on this. that is why I picked this as my first light to mod. Just seeing how bright it was amazed me.

Also just so it’s on the page. I used 2 Demonfire IMR 18350 High Drain 3.7V 1200mAh

TailCap spring mod

Thanks for all the suggestions and links. Would you upload close up pictures of your work? I’d like to see the zener diode and resistor soldered to the board.

Will do as soon as I get the parts. should be here later this week.

AMC7135s will throttle current when getting too hot

just keep in Mind at 2S even the stock ones generate double heat than normal

Leviatan, How can I tell if I can put the zener diode on those pins?

if one pin has 0 Ohm to ground and the other to the 200 ohms resistor

Thanks sir

So can we use the empty pads of the stock Convoy driver like the one in the picture? Does the stock driver have the 0 Ohm pin and another for 200 Ohms?

I just got the parts, so I’ll be checking it soon to see if it can be soldered on the second set of solder pads.

Thanks. Take your time and enjoy your mod project. Looking good so far.

OK, so here is the mod done. The Diode was a bit big but it’s just connected to ground, I wonder if there is a better Diode for this. I also upgraded the power and ground wires to 18AWG.






Awesome…bad ass!!!

Nice solder job :wink:

Need some shots of that bad boy in action!

Don’t always trust those “*fire” batteries…chinesium ratings and all that…I like the purple efest ones…they usually do pretty well and are good batteries

Now you gotta learn to solder the button on the flattop batteries (pretty easy if you scuff the contact and use plenty of flux)

Full power

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celling bounce

Told ya flashlights are addictive :wink:

Great job on your very first mod!

I actually just ordered 2 of the purple EFEST batts. I picked up the fire ones cause people said they we’re good batteries.

cool cool…caveat emptor and all that

Thanks for the pics. Nice mod. How long can you hold the light when running full power?

Very True.

I have let the light run for a few min’s and it’s fine at full power. it does start to get warmish. I’ll have to tun it on and just let it run see at what point I can’t hold it anymore.

How is that for a Solder ball?

After doing some research I think a better option would be going for a DSOD-323F package DDZ4V3BSF-7DICT-ND the size measures 2.50mm x 1.25mm. The cap this is going on is an 0805 so that is 2.00mm x 1.25mm. and just for reference the MMSZ5229B-FDICT-ND that is the SOD-123 is 3.65mm x 1.55mm I have not ordered the “DDZ4V3BSF-7DICT-ND” yet but I plan on it, to double check the size. So if someone is going to do this mod I would order a couple of the “DDZ4V3BSF-7DICT-ND” they are only 0.17 cents

SOD-323F

SOD-123