Xiaomi SU7 Ultra electric vehicle exterior

Xiaomi SU7 Ultra - Electric Vehicle Specs

Sedan

Power

1138 kW

(1547 HP)

0-100 km/h

2.0 s

Top Speed

350 km/h

Battery Options

Standard Battery (95 kWh / 93 kWh)

Charging Curve & Charging Speed Analysis

Understanding Charging Performance

Charging performance isn't just about peak power—it's about sustained power across the entire charging curve. A vehicle that maintains 150kW from 10-80% SOC will charge faster than one that peaks at 250kW but quickly drops to 100kW after 20% SOC. The shape of the curve matters more than the highest peak power.

The key metric is C-rate, which accounts for both charging power and battery capacity. A C-rate of 2.0 means the battery can theoretically charge from 0-100% in 30 minutes, while 1.0 C-rate equals 60 minutes. This makes it easy to compare vehicles regardless of battery size.

Charging Curve Shape

Flat, sustained power across a wide SOC range beats high peaks that quickly taper off. Look for vehicles that maintain high power from 10-80% SOC.

C‑Rate & Timing

C-rate normalizes charging speed across different battery sizes. Higher C-rates mean shorter charging times and more flexible road trip planning.

Battery Options

Gross Capacity: 95 kWh
Net Capacity: 93 kWh
Buffer: 1%
The Xiaomi SU7 Ultra reaches peak charging power of 473 kW between 10–80% SOC.
It takes 11 min to charge from 10–80% SOC and adds 352 km of real-world highway driving range, representing a 3.9 C‑Rate. This performance is better than 99% in its class.

Average Charging Power

206 kW

Avg C‑rate: 2.2

Maximum Charging Power

473 kW

At 11 → 13% SOC

Minimum Charging Power

20 kW

0–100% Charging Time

29 min

Charging Curve

State of Charge over Time

SOC Range Charging Time Avg. Power Avg. C-Rate Energy Added
0% → 100% 29 min 206.3 kW 2.20 C 100.7 kWh
0% → 90% 18 min 290.9 kW 3.10 C 90.7 kWh
0% → 80% 14 min 345.4 kW 3.69 C 80.6 kWh
5% → 100% 27 min 207.4 kW 2.21 C 95.8 kWh
5% → 90% 17 min 300.6 kW 3.21 C 85.7 kWh
5% → 80% 12 min 365.9 kW 3.90 C 75.6 kWh
10% → 100% 27 min 201.3 kW 2.15 C 90.6 kWh
10% → 90% 16 min 294.5 kW 3.14 C 80.6 kWh
10% → 80% 11 min 361.0 kW 3.85 C 70.5 kWh