waidy said:
TonyWilliams said:
Except the cat is already out of the bag with Tesla Roadster and Model S with "twin chargers" using the 70 - 80 amps.
Are the charging behavior the same using 80Amp AC and CHAdeMo/SAE Combo (DC charging) (i.e. charge rate dropped after 80% SOC) ?
LEAFfan said:
With Blink QC, the Amps begin to decrease just after it starts, and really slows well before 80%.
The LEAF is charging at
2C rate (48kW on 24kWh battery) using CHAdeMO, and begins the ramp down at about 50% SOC, from 120 amps. The Blink charger only takes commands from the LEAF... not the other way around.
The Rav4/Tesla 50kWh battery is charging at
1/5C rate (one tenth of LEAF) and only begins a ramp down well above 90%. I wasn't trying to document it, but only noticed pulling 20 amps instead of 40 amps because I was expecting the charge to end soon, and because I had an ammeter on it.
The Tesla 85kWh at 80 amps (20kW) is still only a bit less than
1/4C rate, so I don't imagine it will slow down much until the very end (like Rav4 does).
The Tesla on the 90kW - 120kW Supercharger is still only slightly over
1C rate, so yes it will no doubt start slowing from over 200 amps somewhere past 50%, but I don't have any first hand experience here.
The real point is that the non-temperature controlled LEAF is pushing the charging envelope much more aggressively with nothing but crossed fingers to hope it doesn't overheat.