Differential cross sections for elastic scattering, resonant charge transfer, direct excitation and excitational charge transfer in Li+-Li collisions are calculated at incident energies ELAB=100, 200, 500, 750 and 1000 eV, using the molecular-base coupled channel method and a single common classical trajectory. The electron translation factor was taken into account. The positions of the scattering angles corresponding to the peaks and dips in the calculated differential cross sections are in good agreement with the experimental values. The probability that the system exists in the Sigma u1 or Pi u1 state varies rapidly over a small range around the turning point. On the other hand, a comparison of the final transition probabilities for the various types of rotational coupling matrix element shows that the coupling matrix element around the potential curve crossing point is most effective.