Internal Short Circuit: acronym used in the context of electric vehicle safety discussion, especially thermal propagation and fire risks; In-service conformity: refers to in-use testing, for example, as in vehicle emissions testing using PEMS.

State of Certified Energy: The ratio of the currently usable energy of an REESS (battery pack) to its certified (original/nominal) usable energy, expressed as a percentage.

State of Certified Range: The ratio of the currently achievable range of an electric vehicle to its certified (original/nominal) range, expressed as a percentage.