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It is well-known that unlike its chargeless version the chargedBanados-Teitelboim-Zanelli (BTZ) black hole solution in 2+1- dimensionalspacetime is singular. We construct a charged, regular extension of the BTZblack hole solution by employing nonlinear Born-Infeld electrodynamics,supplemented with the Hoffmann term and gluing different spacetimes. The roleof the latter term is to divide spacetime in a natural way into two regions bya circle and eliminate the inner singularity. Thermodynamics of such a blackhole is investigated by Kaluza-Klein reduction to the 1+1-dimensional dilatongravity.

Regular charged black hole construction in 2+1 -dimensions