Tesla’s Folding Unit (FU) Supercharger Is a Masterclass in Site Execution

From Branden Flasch.

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I found one of the first real Tesla Version 4 / V4 Supercharger cabinets (the 1MW / ~997 kVA unit) and the brand-new FU “folding unit” site in Columbia, SC — and I charged my F-150 Lightning Lariat Extended Range to see how it behaves in the wild. This is the first V4 cabinet I’ve seen (made Feb 2026, TUV/UL2202 certified) and the first FU folding unit installation — worth a closer look.

I walk the whole site: how power comes off the Dominion Energy pole into a 1,000 kVA ABB transformer, then into a 1600 A service entrance feeding the V4 cabinet (480/277 V). I show the cabinet data plate (997 kVA / ~960 kW DC), the 615 A-capable V4 posts, the cooling radiators/fans, and why they moved the ADA post out to stall 1H. I plug in with my Lightning (CCS port) using my adapter, get a ~500 A handshake and roughly 180 kW at ~35% state-of-charge, and I explain differences vs the earlier V3.5 deployments (V4 posts + V3 cabinet vs this true V4).

00:00 – Intro & Sponsor
01:02 – Charging Demo
03:54 – Site Tour & Power
07:19 – Cabinet Specs
09:39 – Folding Unit Design
18:48 – Outro & Conclusion

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