  We investigate the scalar field equation in a (2+1)-dimensional charged BTZ
black hole. The quasinormal spectra of the solution are obtained applying two
different methods and good convergence between both is achieved. Using the
characteristic integration technique we tested the geometry evidencing its
stability against linear scalar perturbations. As a consequence a two pattern
set of frequencies (families) emerges, one oscillatory and another purely
imaginary. In that spectra, the fundamental modes without angular momentum are
hugely affected by the presence of the black hole charge surprisedly even for
small values of this. Their evolution are controlled by purely imaginary
frequencies as in the non-rotating chargeless BTZ case. Similar to others AdS
black holes, the fundamental oscillations scale the black hole event horizon
and the temperature of the hole (far from maximal charges).
