Lexus RZ 500e electric vehicle exterior

Lexus RZ 500e - Electric Vehicle Specs

SUV AWD

Power

280 kW

(380 HP)

Battery Options

Standard Battery (77 kWh / 72 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: 77 kWh
Net Capacity: 72 kWh
Buffer: 6%
The Lexus RZ 500e reaches peak charging power of 150 kW between 10–80% SOC.
It takes 42 min to charge from 10–80% SOC and adds 217 km of real-world highway driving range, representing a 1.1 C‑Rate. This performance is better than 11% in its class.

Average Charging Power

42 kW

Avg C‑rate: 0.6

Maximum Charging Power

150 kW

At 15 → 18% SOC

Minimum Charging Power

1 kW

0–100% Charging Time

1 h 51 min

Charging Curve

State of Charge over Time

SOC Range Charging Time Avg. Power Avg. C-Rate Energy Added
0% → 100% 1 h 51 min 41.5 kW 0.58 C 77.4 kWh
0% → 90% 1 h 2 min 66.4 kW 0.92 C 69.7 kWh
0% → 80% 48 min 77.3 kW 1.07 C 61.9 kWh
5% → 100% 1 h 48 min 40.5 kW 0.56 C 73.6 kWh
5% → 90% 1 h 0 min 65.8 kW 0.91 C 65.8 kWh
5% → 80% 45 min 77.2 kW 1.07 C 58.1 kWh
10% → 100% 1 h 46 min 39.3 kW 0.55 C 69.7 kWh
10% → 90% 57 min 64.8 kW 0.90 C 62.0 kWh
10% → 80% 42 min 76.5 kW 1.06 C 54.2 kWh