janusz Grabon
Member
My opinion this should done.
12 volt battery should be trickle charge i car is sitting not use for longer time
- Thread starter janusz Grabon
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Esprit1st
Well-Known Member
The battery saver+ option is supposed to keep the 12V battery charged. Not sure how long you are thinking of not using the car but that should work.
The Kona is not as bad as Tesla with their phantom drain effect. It might have to do with the higher connectivity level of Teslas. (Just my uneducated guess)
Sent from my moto x4 using Tapatalk
The Kona is not as bad as Tesla with their phantom drain effect. It might have to do with the higher connectivity level of Teslas. (Just my uneducated guess)
Sent from my moto x4 using Tapatalk
janusz Grabon
Member
12 Volt Kona loose 1% capacity per day. Disconnecting battery is not practical because you will lose all stored config including clock radio , +. If disconnect 12 Volt battery for 30 days you will lose 30%
janusz Grabon
Member
Right now I'm getting 305 Miles on full charge In New York State with outside temperature 72F .Best so far I was getting 320 Milles!!!!!
janusz Grabon
Member
It is working for me about 4 weeks
Last edited:
eastpole
Active Member
That *is* an interesting question. I'd love to know how many kWh (fractions thereof) the Kona uses daily, sitting idle at 20 C, at 40 C, at 0 C.
Jared Potter
Member
I don’t think you can entirely blame Tesla or Hyundai or any EV maker for phantom drain. Sure each car is going to have it’s own idle drain but lithium ion batteries by their very nature self discharge that I would not call phantom draining. Phantom draining is that silent energy usage of idling electronics waiting to be woken up by the user or a timed event etc. Self discharge is the physical unavoidable discharge of the battery. Different chemistries and build/designs will have stronger or weaker effects. NiMH batteries were notoriously bad at this with many exhibiting self discharge as high as 10% a month.
KiwiME
Well-Known Member
I always see the dash message if it sits one or more days, which is most weeks for me. Given the understanding that it will only charge 10 times while the car is unused before giving up, then it would stop after perhaps 10-20 days and the 12V battery would be on its own after that. It seems certain that the media unit's so-called "fuse switch" is intended to reduce this drain and I'll bet the car operates fine with it off, as it must be for shipping. Traction battery drain seems low for me but not zero. Over several days I think I might see a percent down, but that could be less than 1 due to the dash percent reading being only an integer.
mikeselectricstuff
Active Member
I think the auto top-up may be a bit too sensitive. I've measured sleep mode power draw from 12V as 22-30mA, corresponding to 1500 hours to full discharge, about 1.5% in 24 hours.
I'm about to set up a long-term logger to see how it behaves over a few weeks.
I'm about to set up a long-term logger to see how it behaves over a few weeks.
mikeselectricstuff
Active Member
Some more test results here https://www.speakev.com/threads/12v-battery-current-draw.141534/#post-2673660
We don't have the "welcome mirrors" here in N.A. so no problem there.
I am a little surprised at the 5.7A draw with the door open (I guess that includes the passenger door as well) with switch off. I tend to sit in the car sometimes during lunch with the passenger door open and wasn't aware of that draw. Going forward I will turn on the car with the electronic parking brake engaged (to shut off the DRLs) so the DC converter can apply 14V to the accessory battery.
mikeselectricstuff
Active Member
Yes but only in "ready to drive" mode, and will only draw significant power if it's trying to move somewhere it can't
I'll try not to move the steering wheel while I sit in the passenger seat eating my sandwich
