  We study black hole formation in the head-on collision of ultrarelativistic
charges. The metric of charged particles is obtained by boosting the
Reissner-Nordstr\"om spacetime to the speed of light. Using the slice at the
instant of collision, we study formation of the apparent horizon (AH) and
derive a condition indicating that a critical value of the electric charge is
necessary for formation to take place. Evaluating this condition for
characteristic values at the LHC, we find that the presence of charge decreases
the black hole production rate in accelerators. We comment on possible
limitations of our approach.
