We ran across this website while doing some research for an upcoming article on non-military uses for military battery. It looks like the guy running the site works for Exponent, a very reputable tech “think-tank”.
Check it out: Warfighter Solutions
Note: The link to the website is for informational purposes only and Soldier Systems Blog in no way endorses the modification techniques published Warfighter Solutions. Warfighter Solutions has a similar disclaimer.