Granular composites made from the high T-c superconductor Bi-2212 and lead are prepared by two ways, whether pressing and heating just above the melting temperature of Pb (as called pressed composites) or pressing and heating at medium temperature near 650 degrees C (as called sintered composites). In this latter case, a large reaction occurs during the sintering between Pb, PbO and the ceramics, as the microstructural study shows. Inductive measurements give evidence of the existence of an imaginary part in the a.c. susceptibility, which is the indication of a coupling between grains and the percolation of electronic currents through the sample. The percolation threshold occurs for a composition Bi-2212 vol.%approximate to 25, as assessed by magnetization measurements. From the electrical response, it is established that pressed composites exhibit a semiconducting electrical behaviour in contrast to similar Bi-2212/tin composites previously studied. No 3D-percolation threshold of the normal conduction by lead is observed. However, for the sintered composites, the superconducting transition exists but it is not complete and is interrupted by a semiconducting behaviour on the surface of grains, which becomes predominant below 45 K upon cooling.