http://www.aero-naut.net/155.html?&L=1
http://www.aero-naut.net/156.html?&L=1
Apparently there are versions for a single 120mm fan or two smaller ones.
They talk about NiMH packs on the Aeronaut site but LiPos should be feasible. At least with LiPos, you will probably need some way to get cooling air to the pack(s) during flight.