no, you have to build a portable ac outlet.
you know the little convertors used for running ac power through the cig lighter in your car.
in my experience, and believe me i gave it an honest effort, the convertor run on a battery pack is very flaky...
in 6 months of trying i never got consistent results.
some of the problems i had were buzzing in the recordings, random dropouts caused by a flicker in the convertor, and just flat out inconsistent battery life.
i'm sure if you carried a big ass 250 w convertor and 3-4 12v sla's you could be consistent with it, but screw that!!!
bush