After Davros declares that he wishes to see Skaro's sun rise one last time, the Doctor rewires him to the life-support system and releases a small amount of Time Lord regeneration power into the cables to restore some of Davros' health.
The Doctor rewires him to the life-support system to restore some of Davros'health. The Doctor releases a small amount of Time Lord regeneration power into the cables. This is to restore some of Davros' health. He wishes to see Skaro's sun rise one last time. This is what davros declares.