Preheat oven to 350 degrees F (175 degrees C).
In a large bowl, mix together the ground beef, egg, water, bread crumbs, and minced onion. Roll into small meatballs.
Bake in preheated oven for 20 to 25 minutes, turning once.
In a slow cooker or large saucepan over low heat, blend the cranberry sauce, chili sauce, brown sugar, and lemon juice. Add meatballs, and simmer for 1 hour before serving.