What are the benefits and challenges of 800V electrical architecture in EVs?

800V architecture (vs traditional 400V) enables: Faster DC charging (up to 350 kW vs 150 kW) by reducing current for same power, smaller/lighter cables and connectors, improved efficiency (lower I-squared-R losses), and lighter motors. Challenges include limited charging infrastructure, higher component voltage ratings, safety considerations, and transition management during 800V/400V charging compatibility. Porsche Taycan pioneered 800V; many new EVs are adopting it for premium segments. Some vehicles include DC-DC converters for 400V charging station compatibility.