Which of the following is not a defense to assault and battery charges?

A) Consent
B) Self-defense
C) Defense of others
D) Ignorance of the law

Ignorance of the law is not a defense to assault and battery charges. The principle that ignorance of the law excuses no one is widely accepted in criminal law. Consent, self-defense, and defense of others are recognized defenses that can negate the elements of assault and battery.