Driver for 4 x MC-E from 18V?

[Dodge]

I've been thinking of doing an update of my fan-cooled DeWalt Snakelight using 4 Cree MC-Es instead of R2s.

Does a driver exist to do this? The battery is nominally 18V, but goes up to just over 20V after a fresh charge.

If I had a 14.4V version it could probably be done direct drive, perhaps with a small resistor, but unfortunately the 14.4V versions are much harder to come by (and all my 14.4V batteries are getting a bit feeble).

Thanks for any suggestions.

 

[nailbender]

This may do what you need these will be available very soon.

Dave

http://www.taskled.com/hipflex.html

 

[Dodge]

That does look pretty much perfect! Will keep an eye on it.

Mind you, this isn't going to be a cheap project given the price of decent bin MC-Es plus that driver.