Looks like this is the one you'd want:
http://www.monarchhyd.com/tech/dc_catalog/s326_08164.html
It runs 12VDC and can run the pressure. It's only 1. 0GPM at the rated pressure, but the Amp Draw is only 125A. That's nothing compared to the electric winches. It'll be slow, but i'll run for a while.
http://www.monarchhyd.com/tech/dc_catalog/s326_08164.html
It runs 12VDC and can run the pressure. It's only 1. 0GPM at the rated pressure, but the Amp Draw is only 125A. That's nothing compared to the electric winches. It'll be slow, but i'll run for a while.