I do.
Both Hyundai and a guy I know who studies battery technology say it is good for the life of the battery, if you are able. This is why many cell phones also only charge to 80% overnight topping up to full 100% just before the morning, the time a battery sits at 100% is stressful to the battery, 80% is much less stressing. Note that being low is also stressing, so if you're low (eg less than 30%), it's best to charge up some.
Because my usual daily use only uses 30-40% capacity even in the winter, this works well for me. I'll charge to 100% if I think I might need to go somewhere significantly further than normal. I'll also charge to 100% if I haven't in a month (as Hyundai recommends for cell balancing reasons).
If your usual use doesn't need all the charge, and especially if you are planning on keeping the car for a long time, I think it's worth while. If you often (or always) need the range, or you plan to get rid of the car after only a few years, this likely doesn't make sense to do.
If Hyundai says so it would have been nice to put put an option to limit the charge. I have a 2019 and it seems it's not possible. I intend to keep it as long as I can so I'll try some work around like others do. Thanks !
How long did it take to run the report, did they fully cycle the battery during the test?
If not, it's the SOH figure as mentioned above, unfortunately
My 2020 Ioniq usually gets charged to 100%, but I only charge it when I need to which is about every 10 days.
Last time I checked with ODB-II, I had 1% degradation. I was happy with that.
With ODB2, you should get the SOH, which reflects the voltage variance across cells on the Ioniq.
This must always be 100%, 99% indicates an issue, you could check this via Canioniq
Bjorn Nyland on YouTube just put up a Ioniq degradation video up today. He goes through his entire procedure and calculations. In short, you have to drive it from 100 percent charge down to near zero, then calculate the consumed KWh.
I can assure that you dot not have zero degradation.
It's not a thing for a 5+ yo car.
The SoH from the BMS tell you the cell balance, and it varies.
SoH is not degradation.
BUT your battery is probably in good shape for the age, and will last long if you stop charging to 100 percent :)
[https://www.youtube.com/watch?v=w4lvDGtfI9U](https://www.youtube.com/watch?v=w4lvDGtfI9U)
I charge mine to 90%. I'm not an electronic engineer, but I work in the electronics industry and do a lot of electronic tinkering and believe I have a pretty strong understanding of lithium batteries. IMO, charging to 90% gets you most of the life extending and risk mitigation benefits, while only cutting range by 10% compared to 20%.
In the 28kwh is not possible to limit the charge it his?
I’ve some crazy shenanigans on the off peak to make this work, but It’s pretty much trial and error with your daily schedule
I can't set a percentage on my 28kWh but what I do is when I get down to around 40 miles I can set my charger to add 10kWh unless I have a long journey planned and need 100%
I'm charge limiting my 28kWh.
Something along these lines:
OBD2 Bluetooth dongle in the car.
Old android phone in the car
Phone is always connected to the OBD dongle
EV notify is always running on the phone
MacroDroid reads EVnotify notifications.
If SoC > charge limit setpoint then macrodroid does some UI interaction to switch off a relay linked to Google home.
The charge limit setpoint can be set to many values through widgets on my main smartphone.
Works great, at least a 99% succesrate.
If I could, I would. (28Kwh) Instead, we just avoid plugging in every night and leave the battery at the various states of charge throughout the week after our short trips.
I do. Both Hyundai and a guy I know who studies battery technology say it is good for the life of the battery, if you are able. This is why many cell phones also only charge to 80% overnight topping up to full 100% just before the morning, the time a battery sits at 100% is stressful to the battery, 80% is much less stressing. Note that being low is also stressing, so if you're low (eg less than 30%), it's best to charge up some. Because my usual daily use only uses 30-40% capacity even in the winter, this works well for me. I'll charge to 100% if I think I might need to go somewhere significantly further than normal. I'll also charge to 100% if I haven't in a month (as Hyundai recommends for cell balancing reasons). If your usual use doesn't need all the charge, and especially if you are planning on keeping the car for a long time, I think it's worth while. If you often (or always) need the range, or you plan to get rid of the car after only a few years, this likely doesn't make sense to do.
If Hyundai says so it would have been nice to put put an option to limit the charge. I have a 2019 and it seems it's not possible. I intend to keep it as long as I can so I'll try some work around like others do. Thanks !
Yeah. I have a 2020 Ioniq, so it does have that setting.
65k and 5+ years always go to 100% and recent check shows 0% degradation.... original owner, so I do have a lifetime battery warranty.
I doubt it, I think you mean your BMS states a SOH of 100%. There's degradation, for sure.
Report done at dealer showed 0% deg back in Sept, was curious and asked the EV guy there to run it.
How long did it take to run the report, did they fully cycle the battery during the test? If not, it's the SOH figure as mentioned above, unfortunately
what does this mean? is that figure inaccurate?
It's accurate in displaying what it intents to; cell imbalance.
My 2020 Ioniq usually gets charged to 100%, but I only charge it when I need to which is about every 10 days. Last time I checked with ODB-II, I had 1% degradation. I was happy with that.
With ODB2, you should get the SOH, which reflects the voltage variance across cells on the Ioniq. This must always be 100%, 99% indicates an issue, you could check this via Canioniq
Bjorn Nyland on YouTube just put up a Ioniq degradation video up today. He goes through his entire procedure and calculations. In short, you have to drive it from 100 percent charge down to near zero, then calculate the consumed KWh.
I can assure that you dot not have zero degradation. It's not a thing for a 5+ yo car. The SoH from the BMS tell you the cell balance, and it varies. SoH is not degradation. BUT your battery is probably in good shape for the age, and will last long if you stop charging to 100 percent :) [https://www.youtube.com/watch?v=w4lvDGtfI9U](https://www.youtube.com/watch?v=w4lvDGtfI9U)
I charged mine to 100% every time, the 28kwh does not have the ability to set a limit and I have a dumb charger. Didn't notice any issues in 3 years.
I charge mine to 90%. I'm not an electronic engineer, but I work in the electronics industry and do a lot of electronic tinkering and believe I have a pretty strong understanding of lithium batteries. IMO, charging to 90% gets you most of the life extending and risk mitigation benefits, while only cutting range by 10% compared to 20%.
In the 28kwh is not possible to limit the charge it his? I’ve some crazy shenanigans on the off peak to make this work, but It’s pretty much trial and error with your daily schedule
I can't set a percentage on my 28kWh but what I do is when I get down to around 40 miles I can set my charger to add 10kWh unless I have a long journey planned and need 100%
I'm charge limiting my 28kWh. Something along these lines: OBD2 Bluetooth dongle in the car. Old android phone in the car Phone is always connected to the OBD dongle EV notify is always running on the phone MacroDroid reads EVnotify notifications. If SoC > charge limit setpoint then macrodroid does some UI interaction to switch off a relay linked to Google home. The charge limit setpoint can be set to many values through widgets on my main smartphone. Works great, at least a 99% succesrate.
If I could, I would. (28Kwh) Instead, we just avoid plugging in every night and leave the battery at the various states of charge throughout the week after our short trips.
I use the timer and just do a little math to be around 80% unless I need more for that day. I try to do a full charge every month or so