I have a somewhat urgent concern regarding a 2016 Kia Sould EV that I bought yesterday. I'm concerned that the indicated range is far below what I expected to find, and I have a small window to return the vehicle (2 days from now).
Prior to making this purchase, I'd been lurking around these forums for a few weeks and understand some of the lingo and measurement methods used to gauge battery health. However, I'm no expert and the indications I'm getting are inconsistent. My abbreviated backstory is that I like the configuration of the model I picked up, and in my area there aren't a whole lot to choose from. It took me about a month to find a model with compatible spec's, a color I liked, and a price I could afford. So I'm hesitant to return the vehicle over what could simply be a misunderstanding on my part. However, if the range truly is as degraded as it appears on the indicator, I will have no choice but to return it. Ok, enough backstory, here are the details.
Model: 2016 Kia Soul EV (standard model, not EV-e)
Odometer reading: 29,800 mi
Range indicated at "100% Battery": 74mi
SOH told to me by a Kia Technician with access to the certified equipment: 89%
Efficiency reading indicated in recent drive history: 3.9mi/kW
Energy to charge the battery from 15 -> 85%: 21.83 kWh
Now I will explain my thoughts and questions. Any help you can provide to correct or clarify would be greatly appreciated!
- (1) I've read around here that 'official' battery size is 27 kWh, but that a 30 kWh battery is actually installed. So that in perfect condition, the SOH would read as 110%
(2) Based on SOH reported by the technician, I expected that my 'usable' capacity would be 0.89*27 = 24.03 kWh. Is this correct?
(3) If (1) is correct combined with my recent efficiency (3.9 mi/kWh), I would predict a range of 3.9*24.03 = 93.7 mi.
(4) If my calculated range is 93.7 mi, did I make any mistake in deriving this? Is there any reason why even after calibration my car would still report only 74 mi?
(5) In order to perform a 'calibration', I brought the battery down to 15%, then charged it back to 100%. This required 21.89 kWh (according to the charger). Extrapolating, I would expect a full charge to require 25.75 kWh. Is there any value to knowing this. Is the amount of power required to charge equivalent to the power available for discharge? (I'm assuming not)
(6) Since I've already attempted one 'calibration' by charging from <20% to 100% in one session, is there anything else I should do to ensure the car is fully calibrated. Will continued driving potentially revise the projected range upward over time?
(7) I have an OBD2 device coming tomorrow and should be able to connect SoulSpy or Torque then. I have not used either of these before. What information should I look for these apps to provide which will help me better understand my car's true range? Are the SOH calculations a good proxy for Kia's professional SOH measure? Are there other metrics that I should monitor?
I see this post is getting a little long, so I will take a step back and wait for some responses to see if I'm focusing in the right direction.
- - Is there any hope that my true range is closer to the 93mi calculated vs 74mi projected by the car?
- And can I do anything to improve my calculation?