  An analytic extension of the Reissner-Nordstrom solution at and beyond the
singularity is presented. The extension is obtained by using new coordinates in
which the metric becomes degenerate at $r=0$. The metric is still singular in
the new coordinates, but its components become finite and smooth. Using this
extension it is shown that the charged and non-rotating black hole
singularities are compatible with the global hyperbolicity and with the
conservation of the initial value data. Geometric models for electrically
charged particles are obtained.
