Under the legal perspective, the term "battery" refers to any physical contact that someone does to another person without their consent. The physical contact is often associated with inflicting pain on someone else such as fighting, hitting, slapping, pushing, and shoving.
The keyword that identifies battery as real is the intention. If there is proof of intention, then the case will be much easily tried in a court of law.
There are two types of battery: Civil and Criminal.
When it comes to criminal battery, it must be proven that someone intentionally committed an assault against someone, or intended to provoke bodily harm and succeeded.
Civil battery is often linked to suing someone as a result of a criminal battery, for example, for medical expenses, or for defamation and libel (in some states). For that reason people who need a defense for civil battery are often represented in civil court to negotiate amounts of money.