New ask Hacker News story: Ask HN: Why is Tesla deploying 400V superchargers when others do 800V?

Ask HN: Why is Tesla deploying 400V superchargers when others do 800V?
2 by iknowstuff | 1 comments on Hacker News.
Every other DCFC network is mounting massive losses and has huge reliability issues, so I’m not surprised Tesla is doing things differently, but still wondering. First 800V deployments started 5 years ago. How come Tesla never decided to future-proof their hardware? Is the higher voltage contributing to the high fault rate of other chargers? Arcing problems? Is it significantly more expensive to deploy, because silicon carbide or whatever? The cybertruck just splits its 800V pack into 400V in parallel to charge off 400V. They must have anticipated that backward compatibility won’t be an issue, so they’re in no rush, but I assume they’d prefer to deploy 800V if it wasn’t for some downsides. What are they?

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