Help Needed! Possible to convert Trustfire 8500 LED to a Dive Light?

milesb0425 · Mar 26, 2014

Hello,

I am in need of a new light for cave diving in North Florida but 1000Lm-2000Lm lights can run in the neighborhood of $800.

Is it possible to take a light like the Trustfire 8500 or a similar high lumen LED and equalize the spaces with some sort of non-conductive, non-corrosive liquid so that it could be taken underwater?

I found a video that illustrates the basic concept-it looks like it has been done before with some success (see below).
http://makezine.com/2010/09/15/diy-5-led-dive-light/

I'd appreciate any ideas or considerations you all might have. Anyone attempted something similar?

Thanks!

Miles

jspeybro · Mar 27, 2014

if you search for 'mineral oil' on this forum you will find a few threads that tried this. me personally wouldn't bother as it is such a mess when you need to recharge the batteries.
it may be easier to by a cheap chinese dive light and replace the o-rings with better quality and start from there (swap led or driver etc.)

sharkbite · Mar 27, 2014

milesb0425 said:
Hello,

I'd appreciate any ideas or considerations you all might have. Anyone attempted something similar?

Miles

.....you could try something like this:

http://www.candlepowerforums.com/vb/showthread.php?237323-Modified-MTE-SSC-P7-900-Lumen-2-Mode

....

But unless you already have the trustfire, and are willing to risk trashing it -
(having modded and flooded a few lights over the years i speak from experience ;-) )
these days, its easier and cheaper to buy them... e.g. :

http://www.ebay.com.au/itm/4500Lm-T..._Scuba_Diving_Snorkelling&hash=item461d100a9c

cheers,

H20doctor · Mar 28, 2014

milesb0425 said:
Hello,

I am in need of a new light for cave diving in North Florida but 1000Lm-2000Lm lights can run in the neighborhood of $800.

Is it possible to take a light like the Trustfire 8500 or a similar high lumen LED and equalize the spaces with some sort of non-conductive, non-corrosive liquid so that it could be taken underwater?

I found a video that illustrates the basic concept-it looks like it has been done before with some success (see below).
http://makezine.com/2010/09/15/diy-5-led-dive-light/

I'd appreciate any ideas or considerations you all might have. Anyone attempted something similar?

Thanks!

Miles

yes it is Possible, in fact I use the trustfire as my main dive light... the problem is it only has a Burn time of 70 mins on a 14 volt pack..

https://www.flickr.com/photos/90194211@N00/13472990144/

Help Needed! Possible to convert Trustfire 8500 LED to a Dive Light?

milesb0425

Newly Enlightened

jspeybro

Enlightened

sharkbite

Newly Enlightened

H20doctor

Enlightened

Similar threads

Latest posts