Can you safely charge the IONIQ 28 kWh EV to 100% 

Hi! At first, I like this kind of vidoes. Well done! But I Think, you don't have some infomation about the Ioniq. Therefore I will give you some hints. I know "some" things about the Ioniq. ^^ a: In CanIoniq, you have to subtract Wh reg from Wh out, then you will get the correct spent energy. You also can also observe it in your own video: Always, when you regen, Wh reg is increasing, but Wh out is not beeing decreased. So, you can't take just Wh out. b: the Ioniq has 28kWh net capacity. It means SoC-Display 100% to 0% is 28kWh. BUT: Only a new Ioniq can get 28kWh out of the battery and ONLY when the battery has min. 25°C before finished charging. c: Capacity is very depend to battery temperature. Björn Nyland also tested this 2 Years ago. He tested the "red" Ioniq two times in winter in order to find out the winter range. The first time with about 5300km on the ODO, he got out 25,9kWh of the cold battery at -8°C. The second time he drove the same car about 600km later at 110km/h, again in -8°C. That time he got 27,8kWh out of the battery after fast charging it to 94% and AC to 100% and then immidiatly drove it. So there was nearly no loss. Another Ioniq (a white one) he tested long ago, was able to get out 25,7kWh with cold battery in winter. The Ioniq, Björn tested before his 1000Km-Challenge and also used it therfore, was able to get out 25,3kWh at 25°C battery temp and 92000km on the ODO. So, temperature is king. d: the Ioniq battery has about 72mOhms internal resitance at roughly 10°C and 55000km on the ODO. So, if you pull 100A, which is about 35kW (it is sufficient to drive 150km/h), you only get 720W heat loss (=2%). At 120km/h you are far under 1%. e: SoH only show the balancing status. My Ioniq gives me about 24,5kWh with 10°C warm battery after 60000Km and 2,5 years. It shows 100% SoH. I only charge it to 100% once a week or every two weeks. The rest of the time I charge it between 80 and 90%. I drive 112km to work and home, day by day. I belive, I could have about 26,2kWh, when battery is at least 25°C before end of charging. I will test it in summer. :) f: I would never ever charge an EV to real 100%. Ioniq charges to about 95% SoC BMS, but even this is too high in my opinion. I have read many battery degradation studies so far. There was none of them, saying: High SoC is fine....none of them. The higher, the worse. It is not linear. 80% instead 100% almost tripples the possible cycles and doubles the years before 80% SoH (calender aging also depends very hard on ambient temperature, but SoC is not less important). g: The displayed SoC of the Ioniq is by far not linear. SoC 70-45% means real 7-8% less. At 20% you have about 16% real. At 90% you have about 85%. But it also depends on the level, you charged to. The first 10% after Charging are dropping very slow, after the the falling increases :D. Always have at least 25km of margin... Edit: Sorry for my bad English on my smartphone.

Man, 2%!! That's living on the edge😄! Great video. I should get a used ioniq next month and your videos are helping to get to know the car before I buy it.

I charged mine to 100% for three years, never had a problem.

I think that those 28kWh "Wh Out" includes those 2.6 kWh regenerated. In effect you counted those 2.6kWh twice - you used them, put them back and then used them again. So 100% to 2% is 28.06-2.65 = 25.4 kWh. That exactly matches your effective consumption of 176 Wh/km. That would mean that you are using only 25.9kWh for 0-100 and that's only 84%.

thanks for this this, it is very interesting, I have a 28 like yours, I live in Australia, alot warmer climate

I have charged our Ioniq to 100% on many ocasions, infact Hyundai recomends doing so at least once each month. I have never let it sit at 100% for a prolonged periode of time. I think that the battery in the Ioniq is of a very high quality and pretty rugged in construction. The worst thing to do is full cycles, charge to 100 % and drive it bellow 5%. That really wears out the battery. myself I rarly go bellow 15 to 20% and I do try to keep it at between 60 and 75% and our car has done 92000km and I havent noticed any degradation..

You can do to 100% but you better avoid it. Don't let it stand long hours At 100 %. If you charge calculate how much time it will need with a constant AC charging rate to 80% or to 85%. If you do fast DC charging it will stop at 94%. Then you drive home an have the SOC reduced accordingly

So that's helpful in that it points to usable battery capacity of (28.1-2.65)/.98 ~= 26Kwh at least under the conditions you tested in. So not the 28kWh that are often mentioned for the Ioniq classic. Would explain why I couldn't reconcile what my car reports in Wh/km and state of charge+capacity.

I totally agree with you.

I just assumed it was like the GM volt and only allowed you to use a percentage of the battery.

Hei flotte videoer:) Hvilke blåtann odb2 plugg bruker du i denn videoen? - Og hva heter appen ? -

Based on your experience, how much range could the Ioniq have in -20c, with full battery? We have had a really cold winter here in Finland but I'm really looking to buy my first EV.

You drove with fairly high consumption which would lead to some heatloss, which is not measured. Try it again these summerdays and your result may differ. Also the number didn't move when you where stationary, so you have some energy not accounted for there as well. Remember that 90% in Tesla is 90%. 90% in anything else is... 80 maby? Only other car I know of is Mercedes B with it's "boost" function or whatever they call which does about the same as 100% on Tesla.

What cell voltage it had at 2%? I think the most important is not the %, but the cell voltage of full and empty bat. Mine Seat Mii electric also at 100% is 95BMS. It has 1.5kwh top and 3kwh bottom buffer. also 16% is around 21% BMS.

Hi Tyfon. We have a new Video out. At vorsprungelektro Axel

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