Tesla's new 325 kW Superchargers only charge the Cybertruck 90 seconds faster

Tesla recently announced that it is rolling out a stopgap solution to upgrade existing V4 Supercharger stations with older V3 power cabinets to 325 kW output until they get outfitted with V4 cabinets and 500 kW peak rates in 2025.

The Tesla vehicle that can theoretically take advantage of those fast charging speeds is the Cybertruck, as it is its first and only EV with modern 800V powertrain architecture. Tesla's chief engineer Lars Moravy once said that the Cybertruck can be topped off in 18 minutes on one of the faster V4 Superchargers when they roll out.

Upon their arriving in Europe, Tesla rated them at 350 kW output, as previously rumored. It, however, started installing the new piles with longer cable with a 250 kW peak output, as they were still powered by the old V3 cabinets.

The same thing happened in the US, but Tesla has now apparently gotten the necessary utility permits and infrastructure testing done, and is starting to upgrade the charging speeds at V4 Superchargers even with the V3 cabinets.

Unfortunately, the 20 or so V4 Superchargers that can now deliver 325 kW speeds still aren't charging the Cybertruck as quickly as its 800V architecture would suggest.

One Cybertruck owner tested it at one of the new 325 kW Superchargers in Blaine, WA, and it resulted in a comparatively slow 35-minute charging time to 80% charge. While the Cybertruck did indeed peak at 321 kW rate, it was only for a grand total of 6% added charge, while the much more important sustained charging rate apparently hasn't changed much.

Cybertruck charging speeds at 325 kW Supercharger

• 35 minutes (to 80%)
• 10 minutes (to 40%)

Looking at the sustained charging rate, it is easy to notice why the Cybertruck only charged a grand total of about a minute and a half faster than at V3 Superchargers or third-party 350 kW chargers:

• 10%: 315kW
• 14%: 321kW (peak)
• 20%: 290kW
• 25%: 268kW
• 30%: 236kW
• 35%: 201kW
• 40%: 179kW
• 50%: 143KW
• 60%: 113kW
• 70%: 91kW
• 80%: 95kW

Tesla just can't seem to get the 4680 battery charging curve right, despite that it issued a software fix and improved the Cybertruck charging rate somewhat not long ago. For its electric pickup truck with a 4680 battery pack to charge quickly, it has to sustain a 200 kW charging rate much longer, and certainly beyond 50% charge.

This is what Hyundai and Kia, whose electric cars are also built on an 800V platform, can do, as they take about 20 minutes to go to 80% charge on a fast 350 kW charger.

Tesla, for some reason, isn't yet capable of doing that, and the hope is that once the 500 kW V4 Superchargers roll out, the Cybertruck could finally be able to charge in under 20 minutes indeed.

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