  Convergence of the full energy (mass) of point charged particle by means of
direct calculation is proved. The consideration is based on the strict
solutions of nonlinear equations system of electrostatics and gravistatics in
the classical field approach. Analytical calculation in the case of point
charge mass of Markov's "Friedmon" M=e/(G^0.5) has confirmed. It is shown that
mass defect caused by gravitational interaction leads to degradation of bare
(phenomenological) mass and to its full vanishing from a total mass of system
in the limit of point particle.
