Pacific RC has LiFe packs. So does ElectroDynamics.
In the past, I have seen both Jet Cat and Kingtech give you high voltage errors with fully charged LiFes. I personally prefer LiPo. But the new Kingtechs require LiFes. So I am stuck with them for the K-160. The good thing with this requirement is I have finally found a use for all the LiFes
that I never used that came with the Jetcats. The K-160 has never given me a high voltage error either. But it did spin the bearings at 260 minutes.