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2019 Ioniq - Electrify America charging inaccuracy

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I charged at Electrify America stations on a recent trip and the charge time listed by ABRP was substantially lower, making me think the charging curve in ABRP is incorrect. I sadly do not have vehicle data to compare to - I will for my next trip at the end of December - but I can compare between EA and ABRP. Is this a problem others have experienced?

I also had to tweak my mi/kWh setting up a bit (4.70 vs 4.50) to make the arrival %'s match, but I assume that is a driving conditions thing more than anything else - traffic wasn't constant, so while I spent a good amount of the trip at +10MPH of speed limit, there was also a good amount of the trip under the speed limit or in stop and go.

Plan link: https://abetterrouteplanner.com/?plan_uuid=18d85cd2-eff5-4345-9ca2-3ece1ecd4fbe


Spreadsheet of actuals vs ABRP Time:


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Using ABRP, I've been doing some calculations to estimate the cost of electricity using several different routes. I've been finding that ABRP substantially overstates the cost of charging at Electrify America stations. For example, a trip to Chicago from my home in Colorado would cost, according to ABRP, about $208. I did my own calculation using the same charging times as ABRP and the amount was $106. How did your actual cost compare with the estimate in ABRP?

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Hi Mike,

The EA prices are different than actual (signing up for "membership" pays for itself in one 16min charge in OR/WA) weren't dramatically incorrect, but the charge time was way off. I wish ABRP staff would help explain it...

  • 1st "8min" charge would be (1 + (0.69 * 8)) = $6.52,  actual charge time was almost double, 14:37. 
  • 2nd "14min" charge would be (1 + (0.69 * 14)) = $10.66, actual time was 18:38.


I noticed today that the EA prices have dramatically shifted and EVgo prices went away when I went to plot a route. I think the ABRP folks are working on fixing pricing but I have no idea, it's just a guess.

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@Jason (ABRP) do you have any thoughts on the massive charging curve variances between actual and ABRP for the Ioniq? I noticed it on my return trip as well. I have to manually set the KW for a given charge station to somewhere between 40 and 50kW to make it mirror what actually occurs. It's like ABRP is using the max acceptance rate for the Ioniq from 0 to 100%, when it really should ramp up and then taper down at ~78%~82%, and then shut off at 94% per ABRP data posted in the blog last month.


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@SiGmA_X - What's shown in that blog post is what's used in the planner, assuming we have accurate knowledge of the DCFC location's capabilities (Power / Amperage is most important) we should provide a good estimate in "nominal" conditions.  If it's very cold our estimate will be inaccurate as every vehicle handles temperature in its charge curve differently, so we haven't come up with a good way to model that.  

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I imagine it is conditions, that's the only thing that makes sense. The charging cost is a problem but that is a bigger problem - it's because EA is ripping off drivers. My car maxed at 67kW across the three below charges, but I am charged as if I am in the 75-125kW range. Solution: write your congresspeople, get them to do what California just passed - I am writing to my reps this week. 

I logged with EVnotify last night, but the dang thing kept disconnecting (crappy OBD2 adapter? limited to one option because iOS :() and I wasn't paying close attention to it, so there are lots of holes in the data.

I am quite happy with the consumption estimate today. Without having logs to compare to ABRP's plan (and I'd need the planned MPH in CSV format), I think I sped a little more than I told ABRP I would - but I know there were also points where I was at or under the expected speed because humans suck at getting out of my way (I'm only trying for 5 over, it shouldn't be that hard!!). I am glad ABRP was slightly pessimistic and still quite close, it is reassuring for planning purposes (or "range anxiety" which I've never had because of ABRP!). 


Planned - https://abetterrouteplanner.com/?plan_uuid=479a908e-e90d-45bc-bdc5-b3459b80cdb6





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