Abstract: Charged massive radiation from a charged BTZ black hole is investigated. The conservation of energy and charge implies the effect of self-gravitation and self-electromagnetism. Viewed as a tunneling process, the emission spectrum derivates from the purely thermal spectrum, but it is consistent with an underlying unitary theory. The result is the same as that of uncharged massless particles.

Key words: BTZ black hole, Hawking radiation, Bekenstein-Hawking entropy, Quantum tunneling, Unitary theory.