So a week after you got the car, it dropped by about 2%, and it's dropped another 2.7% or so after that. The one thing that's really strange is your car reported only 9 L1/L2 charges in 50k miles. That's... not possible. I wonder if the previous owner only charged the car using the quick charge (QC) port. If so, that would artificially inflate the SOH (and wear the pack out quickly). However, QC's usually show on that screen as well. Correct. This made no sense to me.
You have a 2012 battery pack. The battery packs made before 4/2013 are known to wear out and degrade significantly faster than later model years. Being in Chicago will help as the packs hate heat. My 2011 original battery was at 57% SOH, so your pack is in better shape than mine was. This pack should give you 40-45 miles range in the summer and around 25 miles in freezing temps with the heat on. Yup. I am aware of the pre4/2013 battery issue.
I saw the cell voltages picture and it shows that your pack is working fine. To see how the individual cells are faring, you really need to get the car to VLBW (--- on the dash) before taking that exact same screenshot. That said, I'm pretty sure you'll just find that the pack is old and worn out, and that the cells don't balance very well. Unfortunately, other than swapping all the battery cells out, there's not much to improve the situation.I will check this out next week
If the car meets your range needs, I expect that the dropping of the SOH is most likely just the car adjusting to your driving and charging habits, and the SOC drop should slow down or stop. If your commute is 14 miles/day, this car should meet your range needs for 3-4 years, way more if you're willing to forgo the heat. Thats the plan. Battery health going down is concerning.
If you start with the car fully charged, and you drive 20 miles with the car, is it at about half battery? If so, I wouldn't worry. SOH is just an estimate--what matters is the range you actually get. I can get 20+ miles before I lost 6 SOC bars
P.S.
1) Use the seat and steering wheel heaters as much as you want. They barely impact range. However, turning the heat on in the cabin will have a huge impact on range. Be happy you have a 2012--my 2011 doesn't have seat or steering wheel heaters.Yup, My second leaf and 5th electrical car. I know how to save battery in winter
2) You are using a L1 or L2 charger to charge the car, right? Avoid using the QC port on the car unless you absolutely have to. The QC port will heat up and wear out the battery quickly. This car will never get QC. I might do it once to see if leafspy detects it.
3) Can you update your signature to include the car you drive, area, mileage, etc? You can use my signature as an example.Done.
4) I'd you can, charge the car only to 80% in the summer (You can do 100% in the winter if you need the range). The pack will last longer. You can set a charge timer on a 2012 to automatically stop at 80%. Ping me if you need to know how to do that. Already on long life mode and dont plan to change anything.