Single-phase AC: Power = phases(1) × voltage(230 V) × current(A)
Example: 1 × 230 V × 16 A ≈ 3.7 kW
Three-phase AC (star): Power = phases(3) × voltage(230 V) × current(A)
Example: 3 × 230 V × 32 A ≈ 22 kW
Three-phase AC (delta): Power = √3 × 400 V × current(A)
Example: √3 × 400 V × 32 A ≈ 22 kW.
To reach 22 kW, your installation must support three-phase at 32 A. A VW e-Golf charges on two phases; at 230 V/16 A it’s about 7.4 kW.
Battery temperature can throttle power (especially in cold weather)—charge soon after a drive while the pack is warm.
State of charge (SoC): charging slows at higher SoC; the 20–80% window often allows higher rates.
Tesla Model 3: 75 kWh ÷ 11 kW ≈ 7 h (+0.5 h buffer)
VW e-Golf: 35.8 kWh ÷ 7.4 kW ≈ 5 h (at max power).
85 kWh ÷ 18.1 kWh/100 km × 100 ≈ 469 km
VW ID.3:62 kWh ÷ 15.4 kWh/100 km × 100 ≈ 403 km
Note:
Values are calculated; real-world range depends on driving style and auxiliary loads, and usable capacity may be slightly less than nominal to protect the battery.
For overnight home charging, a three-phase 11 kW wallbox already fits most users. Stepping up to 22 kW depends on your vehicle/grid setup and local registration/permit rules. Policies vary by region.
Phases × voltage × current set AC power; three-phase commonly goes up to 22 kW.
Temperature & SoC strongly affect rates; 20–80% is a good window.
Estimate time with “capacity ÷ power” and add ~0.5 h.
Range is “capacity ÷ consumption × 100”; treat it as theoretical.
Contact person: Ian Xu
Phone: +86-18620099949
Email: sales2@zjchampion.cn
WhatsApp: +86-15925644357
Address: 28/f, Huaye Building, 511 Jianye Road, Hangzhou, Zhejiang, China