The term "battery end" refers to the positive and negative terminals of a battery that connect to devices and power sources. Some synonyms for "battery end" include "battery terminals," "battery contacts," or simply "terminals." Other similar terms that describe the different parts of a battery include "anode" and "cathode," which refer to the positive and negative poles of a battery, respectively. Additionally, the term "battery connector" can refer to any device or mechanism that enables a battery to connect to a power source or device, while "battery holder" refers to the casing or compartment that holds the battery in place.