A high-resolution (He-3,t) charge-exchange experiment at an incident energy of 420 MeV has been performed on the double beta (beta beta) decay nucleus Se-82. A detailed Gamow-Teller (GT(-)) strength distribution in Br-82 has been extracted, which provides information to the beta beta-decay nuclear matrix elements. Three strong and isolated transitions, which are to the 75, 1484 and the 2087 keV states in Br-82, are found to dominate the low-excitation region below approximate to 2.1 MeV. Above 2.1 MeV a sudden onset of a strong GT fragmentation is observed. The degree of fragmentation resembles a situation found in the neighboring A = 76 system (Ge-76), whereas the observed concentration of strength in the three low-lying states is reminiscent of the heavier neighbors Zr-96 and Mo-100. The strong GT transition to the 75 keV (1(+)) state makes Se-82 interesting for solar neutrino detection. The Se-82(nu(e),e(-))Br-82 solar neutrino capture rate in a nonoscillation scenario is therefore evaluated to 668 +/- 12(stat) +/- 60(sys) SNU, and some of the advantages of using selenium for solar neutrino studies are discussed.