State of Charge

- Engineering & Applied Technologies -
Aerospace & Automotive Dictionary

An automotive propulsion and energy concept defining how vehicles generate, convert, store, and deliver energy for motion and auxiliary loads. It governs power conversion, thermal management, controls, and performance metrics such as range, efficiency, and drivability.

State of Charge

Engineering & Applied Technologies Dictionary
The current stored electrical charge in an electrochemical storage device expressed as a fraction or percentage of a defined reference capacity (nominal or usable); SoC quantifies relative remaining charge but is method‑dependent (e.g., coulomb counting, open‑circuit voltage mapping, impedance) and must specify the referenced capacity and measurement uncertainty.