Trip report and data from my trip to my dealer last Friday.
My dealer is almost exactly 90 miles from my house. Had my tires at 40 psi. Was about 30f outside, plus or minus during the drive.
Had my charge timer set to be ready at 6:00 am, left my house at 6:30.
For some reason it never actually reached 100%, so my GOM had 98% while leaf spy showed 96.7%.
Arrived at the dealer with 10% showing on the GOM, Leafspy showed 20.1%. I had pre-heated so no heating during the drive needed, just seat and wheel turned on. ABRP (A Better Route Planner) said that with 10% battery degradation and starting at SOC of 100%, I should have arrived with 14% battery. One thing I'm not clear is whether ABRP shows the SOC that I see in my GOM or whether that SOC is what I am seeing in LeafSpy. Anyone know? I'll use the GOM for the moment. As I only reached 98%, the adjusted destination for ABRP should have been 12%. Personally I think arriving at 10% is pretty close to the predicated results, and even a slight wind will dramatically change the arrival SOC. So trying to decide if my battery is really at 10% degradation is difficult. I ended up DC charging in three different chunks before and after the dealer appointment, which took 3+ hours to rotate my tires and adjust my door. So I'm not detailing the return trip. The third stat below is from the next day, and after some charging overnight. Hx definitely took a jump up. Hard to say whether it was from the DC charging or from the extended periods of time at high and low SOC. I am going to re-start my 30%-70% experiment and we will see what happens. One last interesting piece of data came from the MyLeaf app which says I used 26.31 kwh for that drive to the dealer. One can attempt some calculations using that number to obtain battery SOH. I've heard the useable battery is 36 kWh of the 40. The only question I have is whether the SOC in LeafSpy contains that unusable portion, or whether you can get down to 0% SOC in LeafSpy. That drastically changes the calculation.
Starting Stats (LeafSpy):
Next Day Stats:
Degradation Calculations (Leaf spy):
Actual Battery Used: 96.7%-20.1% =76.6%
Useable Pack Capacity: 26.31/.76.6 = 34.3 kWh.
Degradation: 34.3/36 = 95.3%
However, I think Leafspy SHOWS you some or all of the reserved part of the pack. I have never been able to see 100% SOC in LeafSpy. I don't know what you can get down to, but I think I heard 5%? So if Leafspy includes the hidden portion of the battery, the math is very different. For the second version I will use the car's reported SOC.
Actual Battery Used: 98%-10% = 88%
Useable Pack Capacity: 26.31/.88 = 29.9 kWh.
Degradation: 29.9/36 = 83%
Honesty I don't think either 95% or 83% make sense. So maybe LeafSpy is showing some but not all of the reserved battery? Without knowing how much, it is hard to get the math correct.
I would be curious if people assume ABRP to show your GOM SOC % or the SOC in Leafspy, and what the lowest LeafSpy SOC you have ever gotten down to?
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19