As someone who regularly packs around a Surefire G2 flashlight, a CRKT Desert Big Dog knife, a Leatherman Charge Xti, a full bit kit for the Leatherman.. all this slung on a riggers belt... I'm all about a bigger extended battery so that when I forget to charge it (because I do. Regularly.) I won't need to go phoneless.

Mind you, I work in IT, not out being a ninja somewhere... I just like to be prepped for any and all circumstances. If I wasn't living in a communist state (New York), you can bet I'd be carrying a Glock daily as well. Never too many tools on the tool belt.

But please do give us some MAH numbers, and a rough estimate on cost, while you're at it!