  We present new AdS4 black hole solutions in N = 2 gauged supergravity coupled
to vector and hypermultiplets. We focus on a particular consistent truncation
of M-theory on the homogeneous Sasaki-Einstein seven-manifold M111,
characterized by the presence of one Betti vector multiplet. We numerically
construct static and spherically symmetric black holes with electric and
magnetic charges, corresponding to M2 and M5 branes wrapping non-contractible
cycles of the internal manifold. These configurations have nonzero temperature
and are moreover surrounded by a massive vector field halo. For these solutions
we verify the first law of black hole mechanics and we analyze the
thermodynamics and phase transitions in the canonical ensemble, interpreting
the process in the corresponding dual field theory.
