  We investigate stationary spherically symmetric accretion of the relativistic
Vlasov gas on Reissner-Nordstr\"{o}m black holes. The model is based on a
recent analysis done by Rioseco and Sarbach for the Schwarzschild spacetime.
Both models share many common features: The gas characterized by the
Maxwell-J\"{u}ttner distribution at infinity is no longer in thermal
equilibrium in the vicinity of the black hole. The radial pressure at the
black-hole horizon can be even an order of magnitude smaller than the
tangential pressure. Quantitative characteristics of the Reissner-Nordstr\"{o}m
model depend on the charge parameter. For black holes with fixed asymptotic
mass, the mass accretion rate decreases with the increasing black-hole charge.
The ratio of the tangential pressure to the radial pressure at the horizon also
decreases with the increasing charge. On the other hand, the particle density
at the horizon (normalized by its asymptotic value) grows with the black-hole
charge parameter.
