My Kia EV6 ‘Elvira’ Battery Degradation after 34 months

[@alexbraslavskiy4026]

2 year old GT line RWD. Done 72000 km. 69584 Wh remaining at 100% charge. OBD scanner reports 98.7% SOH

[@evodessey]

Not too bad. How often do you DC rapid charge?

[@JonasDavidsson]

2021 EV6, 4000 km. 69567 today. 26 degrees Celsius outside. 100%. First year only rapid charging, the last 2 home charging.

[@peterwright837]

I’m just happy to have my EV6 back after it was in the shop for 7 and a half weeks waiting for a new ICCU.

[@evodessey]

Thats a long time to wait. Most people i know in UK have had it swapped within a week recently.

[@peterwright837]

@@evodessey mine broke down during the outage due to the cyberattack so they couldn’t even order the part for more than two weeks, and then it was back ordered.

[@BAC_Mono]

2022 EV6 GT 23,000 miles mostly AC charged to 80% 98.5% SOH Rapid charged maybe 10 times in total.

[@PNaeyaert]

I have my EV6 since January 2022 and have driven 85287 km. I do not have the car scanner but in summer I can drive up to 530 km with a mixed use. (highway and local roads). Using highway my consumption is about 17kw versus small roads 12kw. I am happy with these numbers!

[@ManoloDaza]

Wow! those numbers are quite amazing! congrats ;-)

[@andreasnorstedt4009]

He probably lives in Sweden. Don’t move there, they drive like f@ggots!

[@jonfb1683]

My EV6 at 100% charge is reporting 73382 Remaining Energy. That was around 20C ambient. 28000 miles. Some debate online whether to use 74000 or 74500 to divide by, but either way gives 98.4 - 99.2% SOH. I'm pretty happy with that!

[@evodessey]

Better than my wife’s Zoe was doing at just 2 years old with 1400 miles on the clock.

[@jonfb1683]

Today it’s reporting 73750. Maybe slightly warmer ambient and battery had just been AC charging at 11Kw for 5hrs.

[@kamilkaminski70]

Car scanner displayed 73.5 kWh remaining at 100% charge at T=25C with SOC=100% for my EV 6. My car is two years old and traveled 68 000 km.I think these numbers are pretty good.

[@evodessey]

Sure is👍

[@elektrischverhaal5166]

My MY22 EV6 50k miles has 100% SOH, with #83 quick Charges and #821 standard Charging. Car scanner also indicates Accumulated quick Charging 1116 kWh and 8923 kwh accumulated standard charging. Doesn't really seem like a reliable figure to me, bit low with my mileage. Relevant to know the ratio fast (bad for the battery) and slow charging, though. And in my case, slow charging is really slow on the normal plug 🔌

[@edvservice-maier]

EV6 GT from 06/2023: 23.000 km, 14°C, DC Load: 37, AC Load: 771 --> 71254 Wh

[@trykpaa]

Acc. to Car Scanner 67042kWh / 96% SOH at 100% and 28°C. GT with 35000km and 20 months old. Apparently fast charged 20 times and 154kWh in total. Almost always home charged to 80% and rarely below 30%. Not the result I was hoping for. Thanks for hinting the Car Scanner. Nice tool.

[@ronnelson06824]

2022 Hyundai Ioniq 5 manufactured in Nov 2021 and bought in USA in Jan 2022. RWD, 303 miles per charge EPA, 77.4 kWh battery. My dongle says 100% state of battery health. 66,000 miles. The guess-o-meter range says 360 ish miles in Summer and 300 in Winter.........It says I get 3.9 miles per kWh efficiency overall on average. I drive like a 62 year old mind and body and smile contantly whilst driving my Shoooting Star Rocketship. I charge when and if I want and need.....level 1 a bunch in years 1 and 2........zero now. Level 2 all the time. Level 3 in the first 2 years cause it was free and very close to my home and where I drive to. Mostly charge to 80% for day-to-day driving......50 to 75 miles per day. Charge every 3 days or so in the garage. I let it get down to 30% SOC ish. I think that battery manufacturers know how to make long lasting batteries. I never complained or was concerned about my Ever Readies or Duracells. MIT says our batteries will last 22 years ish and 300,000 to 400,000 miles. Charging at 40A now.......8kW. SOC 62%.......SOC BMS 62%. Cell voltages seem to be all 3.84V YES, all the same. Best, most relaxing, comfortable and stress free car I ever bought and the most expensive, 45k usd vs. about 30 to 35k usd for 2008 Saab 9-3 Combi Wagen and 2016 chevy volt, both bought new.

[@SkaBob]

About what we got with our Ioniq 5. When I checked it at 50k miles it showed 100% SOH and had around 73300wh remaining, so it was down like 0.9%. We have 61k miles on it now and Ill have to recheck it but not expecting much change.

[@evodessey]

Excellent result

[@ianemery2925]

I have a program called EV Watchdog, written especially for early Kia and Hyundai cars - not sure if it has been updated for the latest cars - but it includes a "Loss of Capacity" reading, which for my 40,000 mile, 2016 Kia Soul EV, it says is 0.9KWh, with the SOH at 96.8%. I do also use Car Scanner, and the other figures match between the two, so I am fairly confident it is accurate. That equates to a loss of ~ 4 miles of range from new; on a fairly tiny, 27KWh battery. These figures havent changed in the 2 years I have owned the car.

[@Jordi1990]

I've started to measure this every 3 months, got the car June 2023, first scan in Dec 2023(15000KM) measured 73052Wh, last measurement August 2024(30000KM) is 70548Wh. Seems like a pretty fast degradation, while mostly AC charging and to 80%.

[@GaryBuck]

Sorry for slow response. I've done 49950km over 2 and a bit years. Rem energy is 71742 at 19 degrees = happy

[@evodessey]

No worries Gary. Good result.

[@duffman9]

Jan 2022 70,000 miles external temp 8c, battery temp 9c to 12c. 100% soc displayed mostly. 7kw charged at home to 80% for last 6 months 70%, fast charged moderate mostly long trips in summer. 69242 wh. Soh in car scanner 99.7%. All cells balanced at 4.14v. Plus, few times on the autobahns. Currently displaying range of 324 miles.

[@evodessey]

Cheers for the info.Looks like a good result. I will add to my spreadsheet. Would be nice to see what total stored energy is at around 20c but i guess we will have to wait for next year for that. What model do you have and is it AWD?

[@duffman9]

@@evodessey air so rwd

[@otleybull]

It’s staggering that many sales staff at dealerships do not know the difference between state of charge and state of health.

[@ronnelson06824]

or ev vs ice

[@GraysonA]

My Genesis GV60 after 14k miles is showing 73,688 remaining energy

[@evodessey]

Not far off mine.How old is your car?

[@GraysonA]

@@evodessey Got it July 2023

[@mad4tar77]

My car is a January 2022 car. I usually keep the car between 30% and 80% state of charge. I've used DC charging only 6 or 7 times in total. Below are my figures from CarScanner. I'm confused as to how SoH is 100% whilst energy remaining at 50% SoC is only 33,150Wh. Any ideas? State of charge BMS = 50% State of health = 100% Remaining energy = 33,150Wh AC charging duration = 670hrs DC charging duration = 2hrs Mileage = 45,342km Outside temperature 14 degrees C. Cell voltage = 3.68V

[@evodessey]

You need to do the test at 100% SOC then measure it. The way the car discharges is non linear as far as i know. That may explain it. So i don’t think your capacity is 2 x 33150=66,300

[@mad4tar77]

@evodessey ah yes, I thought 66,300Wh was very low, but I forgot to account for non linear discharge. Must repeat at 100% SoC, thanks for info

[@mad4tar77]

@evodessey I did this test again this morning. Interestingly, my SoC displayed is 100% in the car and 100% on the "SoC display" field in CarScanner, however the SoC BMS field is 96.5%. Maybe that's allowing for the top end buffer perhaps. Anyway, ambient temperature of 10 degrees, total energy of 70,770Wh and SoH reading 100. 70,770Wh at 100% displayed SoC seems low for 100% SoH.

[@evodessey]

I’d try it again when the weather is warmer. Mine was quite a bit lower at 10c. Did you check for any battery cell voltage differences?

[@mad4tar77]

@evodessey the max cell voltage is 4.12V and min cell voltage is 4.1V. Will try this again when weather is warmer, probably next May!

[@flolou8496]

Does anyone have any thoughts on what the best way to go about checking on the SOH for a high mileage 2020 Chevy BOLT? (They are available as low as 10,000 USD now, but without a true SOH test, it's very risky)

[@evodessey]

I know nothing about the Bolt but a quick Google suggests drain,charge and measure www.reddit.com/r/BoltEV/comments/o8a7ql/how_to_check_battery_health_of_a_used_bolt/

[@flolou8496]

@@evodessey Thank you, but it's unlikely I'de be allowed to do that at a dealership/test drive environment, and only slightly more possible in a private party arrangement,

[@ronnelson06824]

My 2016 volt was fab. At USD$10k, that is so cheap. You can't go wrong. I would say a bit risky. Chevy and their battery partner(s) are pretty good. Even if you had to put some maint $$$ in, worth it. Can you buy an extended battery warranty? It seems to me the service manager could tell you SOH???? Good Luck!