Model S/X 60/70/75: low pack voltage and limits at 50 kW/125 A chargers
At DC stations limited to 125 A, real power ≈ U × I.
For 60/70/75 packs (84s) with a full charge of ≈ 350 V, a nominal of ~300–320 V and ~280–300 V at low SoC:
- 125 A × 280–320 V ≈ 35–40 kW,
which explains "doesn't reach 50 kW". This is normal behavior, not a fault.
For maximum power at such stations, raise SoC/battery temperature before the session.
Links
- Discussion of the 125 A limit and ~38–40 kW: https://teslamotorsclub.com/tmc/threads/chademo-lvl-3-charge-rate-price-worth-it.164491/
- About pack voltage: https://teslamotorsclub.com/tmc/threads/voltage-of-model-s-motors.50391/
- General info about DC fast charging: https://batteryuniversity.com/article/bu-1004-charging-an-electric-vehicle
Sources
- https://teslamotorsclub.com/tmc/threads/chademo-lvl-3-charge-rate-price-worth-it.164491/
- https://teslamotorsclub.com/tmc/threads/voltage-of-model-s-motors.50391/
- https://batteryuniversity.com/article/bu-1004-charging-an-electric-vehicle
- https://teslamotorsclub.com/tmc/threads/model-s-battery-voltage.22341/
- https://qnovo.com/blogs/peek-inside-the-battery-of-a-tesla-model-s
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