  We construct a Lagrangian and Hamiltonian formulation for charged black holes
in a d-dimensional maximally symmetric spherical space. By considering first
new variables that give raise to an interesting dimensional reduction of the
problem, we show that the introduction of a charge term is compatible with
classical solutions to Einstein equations. In fact, we derive the well-known
solutions for charged black holes, specially in the case of d=4, where the
Reissner-Nordstr\"om solution holds, without reference to Einstein field
equations. We argue that our procedure may be of help for clarifying symmetries
and dynamics of black holes, as well as some quantum aspects.
