hornstudio
Well-known member
- Joined
- Jan 22, 2013
- Messages
- 61
This thread is about 62kWh LEAF version only, charged with 200A machines.
Again, I see a Nissan corporate effort here to create ambiguity. Do you have data supporting the statement: "I think much of the complaining is from the Gen 1 Leafs". If there is no data, why even make statements like this except to confuse?I have yet to see anything published that shows significant damage is done to the latest Nissan battery chemistry using DCFC. If the battery is getting too warm, then the charge rate may significantly drop off. I have never had 9 temperature bars. 10 is the last white bar and 11 and 12 are red. I generally don't see charge drop off more than 20-25%. I think much of the complaining is from the Gen 1 Leafs. This post includes a user who has gotten into the red temperature bars several times and his SOH is quite good for the age and mileage of his Leaf.
The simple statement was that the Nissan Leaf has no battery cooling (fact) and batteries get warm while charging (fact). So when the Nissan Leaf is at the "optimum" temperature, it gets warmer when plugged in (fact) and the warming causes the temperature to be higher than optimum thus dropping the charging rate below the most optimum. I hope that's clear.I don't get it. Why would anyone want to charge a battery which doesn't have active thermal management, at a 50kw rate? Or is this something you do only occasionally while on an unexpectedly long trip?
Here you are the first to mention battery warming. Is there data to support this "warms up very quickly" or are you stating this? I don't agree with adding one or temp bars over the time I need to charge "very quickly".And since the Nissan Leaf battery warms up very quickly upon plugging it in (as we all know), the 64 kW/hour rate is a fleeting leprechaun that is extremely improbable for Leaf drivers to experience.
Please post a video of your 70+ charging rate and the battery temperature at intervals during the charging (beginning and every 5-10 minutes).Here you are the first to mention battery warming. Is there data to support this "warms up very quickly" or are you stating this? I don't agree with adding one or temp bars over the time I need to charge "very quickly".
You collect the data since you want it so badly. This thread (per you) is the best rate one has seen DC charging and I answered that part.Please post a video of your 70+ charging rate and the battery temperature at intervals during the charging (beginning and every 5-10 minutes).
I have collected evidence and posted pictures of the sub 50kW charging rates. You indicated you have achieved 70+ kW plus charging rates. Post the evidence. If not, don't make statements you cannot back up.You collect the data since you want it so badly. This thread (per you) is the best rate one has seen DC charging and I answered that part.
It shows that 20.2 kW were delivered and that was equivalent to 40% (20% to 60%). 20.2 kW in the Leaf is 32 - 33%. These numbers don't jive. Maybe there is a good explanationThe car charged faster.than the ev6 and bolt charging nearby.
20.2 kW/h delivered. The Leaf didn't start at 0 kWh.It shows that 20.2 kW were delivered and that was equivalent to 40% (20% to 60%). 20.2 kW in the Leaf is 32 - 33%. These numbers don't jive. Maybe there is a good explanation
Below is how the charging session went with the data I got from the video. The 70+ charging rate was only maintained for 10 minutes or so after which, the rate experienced major drops and was at about 50 within 13 minutes. The session's average charging rate is 62.4. That is far from the 100 kW in the manual and on the chargers. I know the ardent Nissan supporters will say that Nissan just put a 100 kW in their advertising but they never claimed the could meet that rate. Companies that are ethical and want to maintain goodwill and a good reputation with the consumer don't play such games. It behooves Nissan to clearly state that 20% to 80% will only achieve an average rate in the 60's. The chart below stopped at 60%. Just like it was dropping every few minutes, one could expect it to drop again as it went beyond 60%. The numbers are clear. Let's see how the spinners are going to spin this one!The car charged faster.than the ev6 and bolt charging nearby.
This was 20% to 60% of a 52 kWh battery, not a 62 kWh battery. 80% of a 62 kW in 45 minutes is a rate of 66. The average of the above is well below that before even going up to 80% which would have had further drops in rate as the graph shows.So it charged from 20 to 60 in 20 minutes, and looks like it would have exactly met the specs assuming +10: to 70% and +15: to 80%, 20 to 80% in about 45 minutes at a high output 100kW Chademo station.
View attachment 4088
View attachment 4089
The "(100kW)" refers to the type of Chademo station, not the rate. Just like the 240 V station spec does not specify a "rate" but only the length of time to reach full.
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