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New Ioniq 5 Owner - questions about DC charging.

5.3K views 15 replies 13 participants last post by  zamafir  
#1 ·
Yesterday, I drove my new Hyundai Ioniq 5 Limited home from the dealership. Most of the dealers in my area wanted thousands over list price for the car, but I found a dealer that doesn't do that. I paid full price but I wasn't raked over the coals. While I gave a $100 deposit to the Hyundai Concierge back in September or October, I found that I had to do the legwork to find a dealer that would be fair. I did get unsolicited calls from two other dealers each wanting $3-4K over list price so I guess the concierge tried to hook me up. You'd think Hyundai would frown upon their dealer price gouging potential customers.
Even after view countless videos involving features and road tests over the last 8 or 9 months, I find there are many new things to learn about the vehicle. I'm not new to Ioniqs having owned two 2019 Ioniq Plug-ins since late 2018.

I have a question about charging the vehicle at DC chargers. Living in the NYC tri-state area (Northern NJ), I see that there are not many DC chargers and when they are available, they are not often 350kw. What are realistic waiting times to charge from 150kw or 50kw DC chargers from that 10%-80%, and what is the maximum % you should charge the battery to get the longest life?

Sorry if I'm asking questions that already have been answered.
 
#2 ·
Congrats on the new car! Who did you buy from? It's crazy here in the West coast so I'm willing to buy East coast at MSRP and do cross country drive.

As far as battery level, Elon Musk recommend keeping the battery level between 30%-70% for Tesla's with occasionally topping it up and driving it right away to calibrate the battery.

There's many factors which will affect your charging speed, even Electrify America rated 350 kW ones can vary, one of them is your battery temp when you plug in. There's a few Youtube videos on this showing graph levels between the different battery percentage. Best 10-80 is spot on as Hyundai advertise at 18 minutes - that's when all the stars align in your favor - battery at the ideal temp, EA charger working properly etc.

Hope above helps.
 
#3 ·
There are hundreds of pages of discussion on this topic on the Tesla forums because this has been studied in-depth by many many people citing research papers and recommendations from many experts. Lots of noise and discussion but in the end, there are a couple things that were pretty relevant. It seems DC fast charging degradation can be mitigated using a really good BMS. Lets hope the Ioniq has one.

Also, DC fast charging in the lower SOCs don't seem nearly that bad. Li-ion batteries tend to be under higher stress past 70% according to research. I think most tend to only charge to around 65% on roadtrips and get to lower states of charge and then charge again to about 65%. Some of the experienced Youtubers that do many roadtrips only charge to about 65% because the charging rates tend to slow down around there. Coincidentally, they do degradation tests and they they tend to actually trend toward the average degradation even with mostly DC fast charging their car vs. level 2. I think it makes sense...high levels of charge stresses the battery vs. lower states of charge.

I hope this helps.
 
#7 ·
There are hundreds of pages of discussion on this topic on the Tesla forums because this has been studied in-depth by many many people citing research papers and recommendations from many experts. Lots of noise and discussion but in the end, there are a couple things that were pretty relevant. It seems DC fast charging degradation can be mitigated using a really good BMS. Lets hope the Ioniq has one.

Also, DC fast charging in the lower SOCs don't seem nearly that bad. Li-ion batteries tend to be under higher stress past 70% according to research. I think most tend to only charge to around 65% on roadtrips and get to lower states of charge and then charge again to about 65%. Some of the experienced Youtubers that do many roadtrips only charge to about 65% because the charging rates tend to slow down around there. Coincidentally, they do degradation tests and they they tend to actually trend toward the average degradation even with mostly DC fast charging their car vs. level 2. I think it makes sense...high levels of charge stresses the battery vs. lower states of charge.

I hope this helps.
please excuse the hijacking, but I get the sense from the YouTubers that roadtrip EV's that they are mostly concerned with the charge curve, which in most EVs gets really slow as the SOC gets higher. therefore, they find it more efficient to only charge so "much" (like to 65%) before unplugging and racing to the next DCFC. In other words, its not so much for battery health but for the best use of their time (ie, getting the most milage in the shortest amount of time). Granted that is not new NEWS but...given how good the HI5 charge curve is (I believe I've seen people reporting 50kW even at 90% soc) would you still recommend never DCFChariging above say 65% for long term battery health? Does the outstanding charging curve of the HI5 suggests that it has excellent BMS. Or, is there any evidence so far that Hyundai is valuing speed over health? Only asking because chargers are few and far between where we live and we'll need to charge above 80% regularly to do most any road trip in our state.
 
#8 ·
I have a question about charging the vehicle at DC chargers. Living in the NYC tri-state area (Northern NJ), I see that there are not many DC chargers and when they are available, they are not often 350kw. What are realistic waiting times to charge from 150kw or 50kw DC chargers from that 10%-80%, and what is the maximum % you should charge the battery to get the longest life?

Sorry if I'm asking questions that already have been answered.
Charging speed will vary greatly depending temperature. Look the graph there: Charging speed you get when min battery is at 20c with a...

About longest life, all people have their opinion. And since each Lion battery have difference in chemical or others thing different, past thing are maybe not valide anymore or better BMS change thing too. Personal opinion, if I go for a long travel, I fully charge it for maximum range, if not, I charge it at 70%. In the past, Lion battery loved middle charge around 3.5-3.7 volts per cells. It's why I go around it and they do the same with lion battery in satellite for maximum longevity. As I said, each people have his opinion or different kind of battery too.
 
#10 ·
Charging speed will vary greatly depending temperature. Look the graph there: Charging speed you get when min battery is at 20c with a...

About longest life, all people have their opinion. And since each Lion battery have difference in chemical or others thing different, past thing are maybe not valide anymore or better BMS change thing too. Personal opinion, if I go for a long travel, I fully charge it for maximum range, if not, I charge it at 70%. In the past, Lion battery loved middle charge around 3.5-3.7 volts per cells. It's why I go around it and they do the same with lion battery in satellite for maximum longevity. As I said, each people have his opinion or different kind of battery too.
Question: we have been happy with our Tesla Model3 and the charging stations' availability and ease. We do precondition our car whenever possible, before heading out. I know that preconditioning is supposed to help with charging, but doesn't it also help with battery longevity?
 
#11 ·
Yesterday, I drove my new Hyundai Ioniq 5 Limited home from the dealership. Most of the dealers in my area wanted thousands over list price for the car, but I found a dealer that doesn't do that. I paid full price but I wasn't raked over the coals. While I gave a $100 deposit to the Hyundai Concierge back in September or October, I found that I had to do the legwork to find a dealer that would be fair. I did get unsolicited calls from two other dealers each wanting $3-4K over list price so I guess the concierge tried to hook me up. You'd think Hyundai would frown upon their dealer price gouging potential customers.
Even after view countless videos involving features and road tests over the last 8 or 9 months, I find there are many new things to learn about the vehicle. I'm not new to Ioniqs having owned two 2019 Ioniq Plug-ins since late 2018.

I have a question about charging the vehicle at DC chargers. Living in the NYC tri-state area (Northern NJ), I see that there are not many DC chargers and when they are available, they are not often 350kw. What are realistic waiting times to charge from 150kw or 50kw DC chargers from that 10%-80%, and what is the maximum % you should charge the battery to get the longest life?

Sorry if I'm asking questions that already have been answered.
Last Fall when I first bought my Ioniq 5 (and it was still warm) I could routinely get 20 to 80% in about 15 min. using a 150kw charger. The highest charge rate I've ever seen is 127kw, so I'm not sure there's any benefit to using a 350kw charger. Using a 350kw charger this winter, the best I've gotten is 96kw, and that wasn't for very long. The problem is the cold and my car (SEL RWD) doesn't have battery pre-conditioning (and apparently the software update isn't out yet for my VIN.)
 
#12 ·
Yesterday, I drove my new Hyundai Ioniq 5 Limited home from the dealership. Most of the dealers in my area wanted thousands over list price for the car, but I found a dealer that doesn't do that. I paid full price but I wasn't raked over the coals. While I gave a $100 deposit to the Hyundai Concierge back in September or October, I found that I had to do the legwork to find a dealer that would be fair. I did get unsolicited calls from two other dealers each wanting $3-4K over list price so I guess the concierge tried to hook me up. You'd think Hyundai would frown upon their dealer price gouging potential customers.
Even after view countless videos involving features and road tests over the last 8 or 9 months, I find there are many new things to learn about the vehicle. I'm not new to Ioniqs having owned two 2019 Ioniq Plug-ins since late 2018.

I have a question about charging the vehicle at DC chargers. Living in the NYC tri-state area (Northern NJ), I see that there are not many DC chargers and when they are available, they are not often 350kw. What are realistic waiting times to charge from 150kw or 50kw DC chargers from that 10%-80%, and what is the maximum % you should charge the battery to get the longest life?

Sorry if I'm asking questions that already have been answered.
Oh you good man you don't have to apologize I mean you want to know they recommend charging it to 80% on the DC depends on how low you are when you start but say you're at 10 20% I'm going to 80 I'll take you about maybe 20 25 minutes I don't use the DC fast charge I have a 20 20 electric limited I used to level two charges cuz I noticed that when I used the DC fast charge my mileage is reduced My range rather and when I use the the level 2 my mileage increases takes a little longer but you know I mean I have nothing but time anyway so I don't mind sitting there take a nap pay some bills have lunch or dinner or whatever you know so and I charge mines to a hundred percent but if you got nothing but a weekend to just chill not going anywhere use a home charger cuz it'll take about 36 hours to charge it on the 120 volt lol I found out the hard way but it's cool
 
#14 ·
I DCFC'd most of my first 10,000 miles in the car and found anywhere from 20-30% to 80% never took me more than 25 minutes or so on a 150 kW charger and I've only used a 350 kW charger once that I can recall.

You'll find what blend works for you.

Mine's to set the car to 80% DCFC, 60% AC charging (170 miles is more than enough for me during the weekday) and honestly with all the ICCU failures I just level 2 now until that's sorted out. Drove to PS for the weekend, averaged 4 mi/kwH, saw 297 miles estimated at 100% and arrived with what netted out to that between traveled and remaining. Plugged into the 110 outlet at the AirBNB and was comfortably at 80% when it was time to leave. There are many ways to slice the orange as it were.

Looking forward to Hyundai figuring the ICCC issues out, for now mines on a steady diet of 60% AC daily and 80-100% AC when I plan to travel 150-200 miles the night before.