How fast does the SU7 actually charge?
Real-world charging speeds for the 400V Standard/Pro and 897V Max trim, plus plug compatibility across China, EU, US, and Japan.
⚠Unofficial summary · public sources · last updated · 2026-05-05
See sources & confidence →The 2026 Xiaomi SU7 ships with two distinct charging architectures: a 400V system on the Standard and Pro trims, and an 897V high-voltage system on the Max. The 897V system enables exceptionally fast DC charging — Xiaomi claims around 670 km of CLTC range added in 15 minutes — but only on stations capable of delivering high voltage. AC home charging is largely unaffected by trim and remains in the 7–22 kW range depending on your wall-box.
| Scenario | Power | 0 → 100% | Notes |
|---|---|---|---|
| Home AC (standard) | 7 kW | ~13–15 hr | Single-phase 32A wall-box. Cheapest option, set up overnight charging. |
| Public AC (3-phase) | 11–22 kW | ~5–9 hr | European 3-phase wall-box. Limited by SU7 onboard charger to 22 kW max. |
| DC fast — 400V station | Up to 150 kW | ~35–45 min (10–80%) | All trims accept this; charging tapers above 80%. |
| DC fast — 800V station | Up to 250 kW | ~22–28 min (10–80%) | Max trim benefits most; Standard/Pro capped at internal converter limit. |
| DC ultra — 897V station | Up to 480 kW peak | ~15 min for ~670 km CLTC | Max trim only. Stations are still rare; Xiaomi is co-deploying with operators in China. |
The SU7 is delivered today only with the China GB/T DC connector and GB/T AC plug. Any export market would need its plug standard added at homologation time — adapters exist but reduce maximum charging power.
China
GB/T DC + AC
Native, all trims
USA
NACS / Tesla
Not natively supported
USA / Canada
CCS1 (J1772)
Not natively supported
EU / Australia / Korea
CCS2 (Type 2)
Required for any export; likely added at homologation
Japan
CHAdeMO
Legacy DC; rare in new vehicles
- 01Most daily charging happens overnight at home AC; you don't need ultra-fast charging unless you're road-tripping.
- 02Battery longevity is best when state-of-charge stays between ~20% and ~80% for routine use.
- 03DC fast-charging at very low (<10%) or high (>80%) state-of-charge is significantly slower; plan stops accordingly.
- 04Cold weather (<5 °C) can reduce charging speed by 20–40% until the battery preconditions.
- 05Public DC charging in China typically costs ¥1.0–2.5 per kWh; service and parking fees may apply.
- 06If you import an SU7 to a non-China market, you will almost certainly need a plug adapter and may lose 50–100 kW of peak charging power.