They are referring not to the maximum charge level (80%, 100% or whatever) but rather the maximum speed of charge, or current accepted. AC can be set at a lower level than as-fast-as-possible which presumably is better for the battery if you have time. DC is negotiated between the supply and the car and is not adjustable by you.
2 charging issues
- Thread starter Macone
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BaylorBob
Active Member
Malcome when I got my Kona Ultimate EV in June 2021 we had temperatures between 70 and 90 degrees every day since I live in Southern California and these temperatures are normal for us until about October when things start to cool down. My charging range started out at 325 Miles (523 Kilometers for you Canadians). Then it started dropping with every charge to 318, 315, 312, 311, and 305. I have experimented by charging with 28%, 18%, 15%, 10%, and as low as 5% remaining in the battery, all with my level 2 Home Charger. It made no difference. The range just kept dropping. Yesterday it was cold for us (about 60 degrees and windy) and My battery had an 89% charge. I was just going shopping at Walmart and there was an Electrify America Charger right in front of the Grocery Door. The Best Parking Spot at the store. So I decided to use the Fast Charger (the first time I ever used any Public Charger) and it took 53 minutes and 45 seconds until the charger stopped at 99%. It was charging at 7.5KWH and delivered a total of 9KWH. When I started the Charger screen had a message on it stating that since my battery was almost full it was going to charge at a much slower rate. I had a range of 289 miles when I started (if I remember correctly) and when I finished I had a 306 Mile Range. But I am positive my Battery was at 89% Charge. Electrify America sent me an email with the Charging Time and the number of KWH Delivered.
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Frank Pierson`
Member
When warm weather comes back you'll see the range increase. They have adaptive learning and winter use decreases battery capacity as well as using more power for cabin heating.
BaylorBob
Active Member
I have the exact same car. I live in Sunny Sothern California where the afternoon Temperature from March thru October or November is usually between 75 and 90 every day. Cold winter days might be between 60 and 70 degrees. I leased this car in June of 2021. The charging range has steadily dropped with each charge from a high in June of 325 miles on the day I picked it up to 305. Two days ago it increased to 306 using a DC Supercharger starting with an 89% Battery Charge. Hyundai rates the car with a range of 258 miles. I hope it doesn't happen but I have a bad feeling I will be dropping below 300 miles with my future charges. There is no way any of us can complain since Hyundai's answer is the Car is only rated at 258 miles.
BaylorBob
Active Member
If I understand you right, you are telling me that if I set the AC Charge Level to 50% instead of 100% the battery will still charge to 100% but take longer if I have the time? Right now it takes 9 hours with my level 2 charger. I start at 9pm and end at 7am, all in off-peak time. If you are correct I will be in Prime Time - Costing me More Money to Charge. Nine hours is enough for me. Thanks
You understand me right but that is not the right place to set it. Sounds like for your use you should leave it at maximum speed. If you set a percent that's where it will stop charging. The setting for reducing the speed of charge rather than the maximum charge is (if I recall correctly) "high/medium/low" rather than a percent. I'm not at the car at the moment to find that screen.
I found some photos of the relevant screens here:
Kona AC charging question - AEVA Forums
I found some photos of the relevant screens here:
Kona AC charging question - AEVA Forums
BaylorBob
Active Member
I have good news to report. On April 16, 2022, I had 35% Battery Remaining and I decided to charge at home using my level 2 charger like I always do. Much to my surprise, my mileage after steadily declining (see line 3 above) jumped up to 316 Miles. So maybe it was the fact I had 35% battery left. I will find out by charging it again when It is at the same 35% Level. Or does anyone think that the one and only time I used the DC Fast Charger (March 30th) with an 89% Charge when I started, had a positive effect on my battery?
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And so the revival of additional range begins, more likely due to warmer weather.
It couldn't have hurt the pack charging to full with the DC charger (hopefully no one waiting behind), may have even initiated some top end balancing.
When you do use the EA DC charger again, try to time it for April 22 or 23 to take advantage of the Earth Day freebee
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BaylorBob
Active Member
I have Free Charging including DC Fast Charging from Hyundai on Electrify America for 3 years, the length of my Lease. I got it with the car in June of 2021. This was the 1st time I used it. I have only seen that Walmart Charger being used ONCE in the last 6 months. If it was a Tesla Charger there WOULD be a Line every day.And so the revival of additional range begins, more likely due to warmer weather.
It couldn't have hurt the pack charging to full with the DC charger (hopefully no one waiting behind), may have even initiated some top end balancing.
When you do use the EA DC charger again, try to time it for April 22 or 23 to take advantage of the Earth Day freebee
Now bordering on unaffordable in Quebec with a 125% increase in charging fees
- Quebec – $0.45 per minute
BaylorBob
Active Member
That is outrageous. Can't you sign up with a charging plan with one of the Charging companies? Or buy a level two charger and install it in your garage (if you have a garage). That's what I have done and I only charge after 9 pm when the rates drop to their lowest level.Now bordering on unaffordable in Quebec with a 125% increase in charging fees
- Quebec – $0.45 per minute
There are presently 7 Petro Canada fast chargers in Quebec, there are 493 other ones to choose from. If travelling through this province, and in need of a fast DC charge, the best option would be to avoid Petro Can (last resort only). At least until the rates are realigned with all the other competitors.
A mistake on Suncor's part IMHO
Ferenc Jakab
Active Member
I'm charging at 8 to 12 C, (no heated garage just natural temps) and not getting 400s either. The other night it got to 14 and I got 392. Hoping warmer weather improves this too.
BaylorBob
Active Member
I am Happy to report that since I posted the above, my Mileage has steadily increased from a low of 305 miles with the next charge being a Major Jump to 320 miles then increasing to 327 miles then to 331 Miles then to 333 Miles on September 2, 2022. Since I don't drive much (4810 miles in last 13 months) I only charge my car approximately every 3 weeks, city & freeway driving only in Southern California and always in Eco Mode. The amount of charge remaining in my battery ranged from a low of 1% to a high of 28%. I have attached screen shots I took of my mileage. Most were taken off the My Hyundai app. But the 333 I took off the Cars Screen including the 1% left in my battery that later dropped to Zero but I didn't get that pic.
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KonaTom
Well-Known Member
They are talking about charging rate, not total charge limits
BaylorBob
Active Member
I just upgraded my System and Navigation by Downloading the software from the Hyundai Site. Installed it with a 64 Gig USB Drive. I believe the update was dated September 22, 2022 so it is very Current. I was very hesitant to do this because there are always issues that are unwanted and I was worried that my mileage range would drop. Much to my surprise, it increased by one mile, from 333 to 334. See attached screenshot. The Radio has a completely different interface or look, but I like it. I was able to set it so it covers the entire screen. Also, I always drive in Eco and I use the left paddle to set it at Level 3 regen, but it had a tendency to slip out of Level 3 and drop down to Level 2. The new system I installed has a setting where the Regen Level can be permanently set to Level 1, 2, or 3. I set it to 3 and it stays there. It has not slipped down even once. I am still looking for new features. If I find them I will post them.
.After my trip this week I have a question on my 2022 Kona Ultimate. How fast DC fast charging should be?
After driving about 160km battery about 12% I plug into a 100Kwh charger. The battery is at 28C according to the EVOBD2. The rate I get is around 40 kwh. It took 75 minutes to get to 85%. Other 150 kwh and 350 usual rates are from 32 to 42kwh. Some 50kwh chargers are at 46kwh which are ok. My dealer's service say they don't have the equipment to test yet, so no help there. Any ideas ?
Edit: I called the company who owns the chargers. They said they do not limit the charge speed.
After driving about 160km battery about 12% I plug into a 100Kwh charger. The battery is at 28C according to the EVOBD2. The rate I get is around 40 kwh. It took 75 minutes to get to 85%. Other 150 kwh and 350 usual rates are from 32 to 42kwh. Some 50kwh chargers are at 46kwh which are ok. My dealer's service say they don't have the equipment to test yet, so no help there. Any ideas ?
Edit: I called the company who owns the chargers. They said they do not limit the charge speed.
Actually, they lowered it from 77 to 75 kW for the 2022 model, but I have only seen close to that rate in optimum conditions when the ambient temp is well above 70 degrees and only with low SOC. If you are getting a better rate at a 50kW charger, I would stick with those machines until the conditions are more favorable.
"At 75.0 kilowatts, the Kona also has an above-average charging rate, with the Kia Niro EV being the slightly better of the two with a max charging rate of 77.0 kW."
BaylorBob
Active Member
I was recently at the mall where 10 Tesla Superchargers were in use. The Tesla Charger repair man was there and I struck up a conversation with him. He told me that if you are using a Double Charger where two cars can charge at the same time, one on each side, this will slow your charging down. He also pointed to a Large Transformer the size of 2 Refrigerators over in the bushes about 200 feet from the charging stations. He said it was supplying electricity to all 10 of the Superchargers and that every time another car hooks up to any of the Superchargers all the Chargers are affected and will slow down. He may be full of it, but this is what he told me. You Electrical Engineers on here can say if he is right or wrong.
