BYD Song Ultra EV 605 electric vehicle exterior

BYD Song Ultra EV 605 - Electric Vehicle Specs

SUV RWD

Power

240 kW

(326 HP)

0-100 km/h

5.9 s

Top Speed

210 km/h

Battery Options

Standard Battery (75 kWh / 68 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: 75 kWh
Net Capacity: 68 kWh
Buffer: 9%
The BYD Song Ultra EV 605 reaches peak charging power of 1000 kW between 10–80% SOC.
It takes 5 min to charge from 10–80% SOC and adds 223 km of real-world highway driving range, representing a 8.9 C‑Rate. This performance is better than 99% in its class.

Average Charging Power

183 kW

Avg C‑rate: 2.7

Maximum Charging Power

1000 kW

At 19 → 26% SOC

Minimum Charging Power

5 kW

0–100% Charging Time

24 min

Charging Curve

State of Charge over Time

SOC Range Charging Time Avg. Power Avg. C-Rate Energy Added
0% → 100% 24 min 183.0 kW 2.67 C 73.5 kWh
0% → 90% 10 min 382.9 kW 5.60 C 66.1 kWh
0% → 80% 5 min 592.8 kW 8.67 C 58.8 kWh
5% → 100% 23 min 178.2 kW 2.61 C 69.8 kWh
5% → 90% 9 min 383.7 kW 5.61 C 62.5 kWh
5% → 80% 5 min 617.9 kW 9.03 C 55.1 kWh
10% → 100% 23 min 170.9 kW 2.50 C 66.1 kWh
10% → 90% 9 min 372.3 kW 5.44 C 58.7 kWh
10% → 80% 5 min 610.4 kW 8.92 C 51.4 kWh