marcelg wrote:I just started using Leaf Spy, and it's showing my SOH at 86%, with 2,459km on it. It had 25km on it when I got it.
My Leaf is a 2017 S (30kwh), which I took possession of in early September, so I've had it for 3.5 months. Charging has been mostly L1 once or twice per week, only getting to 100% a couple of times. I've done one DCFC, from 30% to 57%. Two L2 charges, also not to 100%.
Current temperature here is -3C, but recently it's been averaging between -10 and -20C.
Leaf Spy is showing:
AHr = 68.76
SOH = 86%
Hx = 83.60% (what does Hx stand for?)
3QCs & 52 L1/L2s
Temp = 0C
On the summary page:
SOC-> 53.5% (I was using the heater while trying to figure out how to read Leaf Spy)
Is the SOH affected by temperature? (0C should be a 10% loss of capacity)
Or do I have a dud? (did a dealer leave it parked at 100% too much?)
Or do I need to charge to 100% and then run it to turtle to reset the SOH reading?
Assume the dealer did have it charged close to 100%. The best thing is to check the build date on the drivers door jam. Hopefully it didn't sit too long on the lot (IMPORTANT- in warm weather say above 70 F, which is considered warm north of the 40th where we live.)
When purchasing an EV especially one without temp mgnt like the Leaf it is best to order and p/u same day or next after arrival as the Nissan factory shipping charge level seems to be about 40% for new Leafs.
Don't worry about your stats, your battery pack is probably in hibernation at the last level you left it after the warm weather finished for the year.
Go ahead and charge to 100% when the temp is cold, it should zero affect on the capacity degradation, ( I routinely charge and leave the vehicle at 95% and charge to 100% probably 3 times a week (again this applies only to cold climate conditions), my stats are 76.5 AH, 96% SOH ,91.37% Hx c/w 27.1 kWh 12,000 Kms
Hx is a term given to measure the internal resistance of the pack ( it's conductivity) as a percentage of mho's which all packs have and we Leaf owners try to limit that # and thus reduce degradation.
A good way to keep your capacity as large as possible before winter is to "drive the car" don't baby it before the cold sets in. Also don't routinely drive the car to a low state of charge so below 10% and keep it there for long.
The majority of the degradation seems to happen in warmer climates including south of the border and in Canada during the summer. Try not to leave at a high state of charge during warm weather. I tend to leave my pack at the highest level that will allow max regen during the summer which on my pack is about 90%.