rogersleaf wrote: ↑
Sat Jan 02, 2021 8:23 pm
If looking for a comparison to another 40KWh Leaf, the fastest DCFC peak charging rate I've observed has never been past 45KW according to graphs shown on ChargePoint's phone app. The charging curve usually builds gradually to that rate over several several minutes until roughly low-50'ish % SOC. That 45KW peak is a peak and have never observed a sustained plateau. Afterwards, the following down-slope I observe is relatively linear & gradual to about 18KW at roughly 85% SOC, and about 12KW at 90+% SOC. My last session was 50 minutes and took in 26.4 KWh, which represented 10% to 85% SOC, and chose to DCFC to rewarm the pack after leaving the car parked outside several days in 20F weather. So reasonable comparison on a stone-cold pack, took on 75% capacity averaging in low 20's KW rate.
Thanks for the input. If you go back to that charger you should see on the charger itself a sticker that will label it as a 360V x 125A charger. That's why you get up to 45kW charge rates.
The only QC charger I have ever used is a 360V x 100A charger so my max charge rate will be 36kW & of course the typical taper as the reported SOC is sent back to the charger.
My issue/problem is my car is only charging at exactly 50% of the indicated charge rate that both the charger & the dash inside my car is displaying. This has happened 2-3x in total and all of the most recent sessions. This past charge was the 1st time I had the ability to load up Leaf Spy & confirm that that actual wattage going into the battery was 1/2 of indicated. The prior 1-2 sessions I simply noted that after the typical 15-30 min I would charge I had no where near the higher SOC I would have had from prior QC sessions at this same charger.
I will go back & log an entire charge session so everything will be better documented because I commenced troubleshooting after already being at the charger for like 30 min after I came back to the car after chatting with some dealership folks & discovered the car was nowhere near where it should have been relative to the time spent charging & the indicated charge rate.