Photovoltaïc parameters, minority carrier lifetime and defect characterization have been used to study the degradation of P/N lithium-doped solar-cells irradiated by 1 MeV electrons. This work points out that A centers ([V-01 complexes) and divancancies play a dominant role in the degradation of the cells. Annealing studies in conditions similar to the space conditions show that an important recovery of the cell parameters can be obtained. A rapid disappearance of both A centers and divancancies is observed and a new defect presumably associated with lithium (ΔE=Ec-0.36 eV; σn≈2.10−16cm2) forms simultaneoulsy.