Place meatballs into the bottom of a slow cooker.
In a small bowl mix together cranberry sauce, chilli sauce, brown sugar, garlic powder and cayenne pepper and mix well with a spoon.
Pour the sauce over the meatballs. Cook on high for two to three hours or four to five hours on low, or until meatballs are warm all the way through.
Switch to warm and serve meatballs directly from the crockpot.
