  We provide the quantization of a charged black hole. We consider a
redefinition of the scalar constraint in order to render the algebra of
constraints as a Lie algebra. We apply loop quantum gravity techniques adhered
to a novel improved dynamics scheme. We show that the model is solvable in
closed form. We compute effective geometries, and show that the resulting
effective space-times replace the inner horizon with a transition surface that
connects trapped and antitrapped regions within the charged black hole
interior. Quantum effects therefore stabilize the classical inner Cauchy
horizons, as long as the charge is small compared to the mass. We further
discuss the properties of these effective geometries by defining an effective
stress-energy tensor out of the Einstein tensor, concluding that the null
energy condition is violated.
