Inverter sound effects, royalty-free and cleared for commercial work. 2 libraries carry this tag, most of them filed under Production Elements and Electric.
Recordists here also tag Electric, approach and mirror, which is worth a look if nothing below fits.
Comprehensive collection featuring electric welding sound effects captured in diverse settings, offering both close-up and distant recordings with detailed meta-tags for versatile audio production applications.
This comprehensive vehicle library captures 855 detailed sound effects from a Volvo XC90 hybrid, featuring electric motor recordings, multiple perspective drives, and interior cabin acoustics through synchronized microphone arrangements.