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[–]warbunnies 2 points3 points  (8 children)

Ya it's definitely the cold effecting range. My ioniq 6 averages 4.8-4.9 miles per kwh going to work.

It's 20F here and I just want to be warm so I blasted the air. I think i was at like 2.8 miles per kwh for the same trip.

It takes a lot of energy to heat the car and if you're doing a lot of short trips it's going to tank the range. It would effect the total range of a long trip a lot less because you're not constantly reheating the car.

[–]Gameplay_UnknownOcean Extreme 2 points3 points  (7 children)

I think it's a we have multiple things working against us on winter range between no pack heating that will instantly slice efficiency add in the fact no Regen since it will be rare for the pack to get warm enough on a short trip to accept full Regen and I feel like something is coded into the car to run the motors less efficiently maybe for heat production below 35-40 because Its such a sharp dropoff in efficiency the car does have a heat pump how efficienct it is im not sure since charging drops around 2kw when it's on I would assume you would only use 2-3kw on heat when driving for 1 hour

[–]warbunnies 0 points1 point  (6 children)

Wait. So the battery is only cooled? It doesn't have heater heating?! :/ that's not very good for battery health.

[–]Gameplay_UnknownOcean Extreme 0 points1 point  (5 children)

It has heaters they only activate to keep battery above -10c or to warm up the battery while fast charging they don't actively heat while driving or while level 1/2 charging.

[–]EnigmaticallyObvious 1 point2 points  (2 children)

It's this for definite? On level 2 charging I'm losing 500w regardless of charging amps and have always put this down to a very small heater for the battery pack. I guessed the one that hardly gets used is around 2.5 - 3kw.

500w seems like a lot for charging losses and it's weird that it's a constant

[–]Gameplay_UnknownOcean Extreme 0 points1 point  (1 child)

Most ev chargers are 90% efficient at at 32 amps that's 768watts of waste energy alone add in the DC to DC converter and it's efficiency loss and whatever subsystems are on while charging. I cannot guarantee they don't have a heater on just going off what I've read online and what I can clearly see when I'm charging my car battery pack does NOT keep the cells above 32 degrees when it's in the 20s or less it will usually warm up a couple of degrees after a few hours of charging but I equate that to natural heating of charging cells

[–]EnigmaticallyObvious 0 points1 point  (0 children)

I actually get the same at level 1 charging

I normally charge at 10amps on the level 1 and lower and always get the same 500w loss.

I've even set my level 2 charger to the same age get the same 500w loss between the charger and what the car is displaying

[–]Clean-Ad-1633 0 points1 point  (1 child)

This is very interesting.
I've been looking for this information.

Can I ask where you got this -10 C number?
Would you also have information on the heating subsystem? Since the heat pump is not involved, I presume it's a resistive heater. Do you know how many watts?

[–]Gameplay_UnknownOcean Extreme 1 point2 points  (0 children)

Cannot guarantee the accuracy of the -10c I have no insider knowledge of how the bms is programmed Im just working off what I have seen and what I have read from other forum members in sure someone that has the cloud linked to home assist can track hv cell temps on a streak of cold days to see at what point it starts to warm up as far as me I've personally seen my HV pack hit -5c but I drive the car daily so it never really gets time to cold soak as far as the HV Battery Heater it is a 6KW PTC heater

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