High-voltage and 12V electrical system topology for smart fortwo electric drive (451), showing battery, power electronics, motor, chargers, and PTC heater connections.

Electrical system schematic diagram with high-voltage (orange) and low-voltage (blue) circuit paths connecting battery, motor, chargers, and control units.

View full-size image ↗

See all EV-specific figures for the Fortwo (451), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.