bidirectional onboard charger

A **bidirectional onboard charger** is a power‑electronics unit installed inside an electric vehicle that can both **charge the vehicle’s battery from an external power source** and **convert stored battery energy back into AC or DC power for export** to external loads, such as a home, building, or the electrical grid (e.g., vehicle‑to‑home, vehicle‑to‑grid, or vehicle‑to‑load).