Armor question

[marinarusalka.livejournal.com]

Okay, I tried to look this up, but my house is a disaster area right now, and I can't find any of my New Avengers TPBs. I think the cats might've sold them on e-bay. So I'm hoping the smart folks here can help.

Tony had Extremis when New Avengers formed, so it was the suitcase armor he could summon with his brain, right? And did the books ever say how it was powered? I know the whole "mini arc-reactor" business is movieverse stuff that Fraction later adopted, but did the Extremis armor have its own power source, or was it one of those things where Tony had to lug it back to the lab and recharge it every once in a while?

Sigh. I probably spent more time worrying about this stuff than the actual Marvel writers do...