This is my latest mod for a Mini M*g. I learned about the Bad Boy Module while reading
around the "homemade and modified lights" pages in CPF.
I orderd one at the CPF Shop (link to come).
It is a modification with a step up converter and regulated 500mA current output. For a LED it uses Luxeon Star LED. Its output is very satisfying and it has got a nice beam quality and it is very bright. For that mod I got a Kroll Tailcap Switch as well.
Using 2000mA NiMH Batteries I use it a lot around our house. Its my primary light getting around the property at night.