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brancky3

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I wish I could say that about my Tesla. If I leave my Tesla for a week at the airport, I better have a supercharger nearby for when I get back.
That's surprising to me! I don't use cabin overheat protection nor sentry... maybe that's why?
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Yellow Buddy

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That's surprising to me! I don't use cabin overheat protection nor sentry... maybe that's why?
Yup cabin overheat and sentry has a huge effect. But even with those turned off my car still consumes. I also just noticed you were in SC, which is pretty moderate in terms of climate. I'm in the NE and my car is constantly trying to cool itself in the summer or heat itself during the winter to maintain battery temps. That's another big factor that may be working in your favor.
 

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My Tesla M3 has been sitting in a garage for 2 days, ambient temps in the 50's. Have not checked it. Was 73% 2 days ago, 73% today....Rivian needs to get this fixed!
 

SSteveEV

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This is obvious but: one of my frustrations with excessive vampire drain is that with our larger battery packs and worse range efficiency the drop in measured miles and % lost equates to a larger kWh loss vs a smaller EV pack. In theory if apples to apples for communications/processing we should be getting lower % or miles lost not worse. In other words, there is even more room for improvement on Rivian's side to catch up. End of the day it is watts wasted that we should be measuring/holding as a baseline.
1% of LR Model 3=0.82kWh
1% of R1T= 1.35kWh (64.6% more watts lost)

With the understanding that any battery management issues may/likely scale with the battery size so that portion would be different but per above scholarly posts should be a smaller part of the issue if parked inside.
 

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Have not heard of vampire drain issues with the competitive truck. My current EV has no battery drain when parked for 2 weeks (due to vacation then heavy snow - no snow tires on it)

When they redesign the maxpack architecture, I look forward to this issue being sorted out
 

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gamarsh

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Has anyone noticed that the battery drains while parked overnight. I turned off the gear guard but the drain continues
 

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I'm no battery scientist ???‍? but hear me out...

What if this "drain" is actually the system using energy to keep the batteries at a healthy temperature, extending the useful life of the batteries? Has anyone been able to see battery temps somewhere in the software before they changed the code?

Should my harebrained hypothesis be correct, could it be possible this extra energy use is a net gain in the long-run of a 500k mile useful battery over a 300k useful battery of the competition? ??‍♂
 

Bradyb23

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I have to disagree, while not a huge problem this issue shouldn’t exist at all. We left our model 3 at the airport for 5 days at 65%, came back to it being 65%. I don’t know how much of that is adjusted behind the scenes by Tesla but if the car is asleep it shouldn’t be using any battery.

Sometimes I drive to another airport to fly (~100 miles each way) which would be about 65% off the battery. If I leave it for two weeks I’d be cutting it pretty close to get home without charging.
Interesting. I owned a 2019 Model 3 and there was always drain when left parked for extended periods unplugged. Of course, when I parked at the airport I kept Sentry Mode active but I resisted checking on it constantly and limited opening the app to once a day. I didn't keep metrics, but I'm certain the drain was more than 1.5% each day. As a new EV owner at the time, when I contacted Tesla about it they explained all of the reasons why this is perfectly normal, and ways to minimize the drain. But zero percent drain after 5 days parked with no power? Unless you put it into some sort of deep sleep mode, I hope I get that magic battery next time around! : )
 

brancky3

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Interesting. I owned a 2019 Model 3 and there was always drain when left parked for extended periods unplugged. Of course, when I parked at the airport I kept Sentry Mode active but I resisted checking on it constantly and limited opening the app to once a day. I didn't keep metrics, but I'm certain the drain was more than 1.5% each day. As a new EV owner at the time, when I contacted Tesla about it they explained all of the reasons why this is perfectly normal, and ways to minimize the drain. But zero percent drain after 5 days parked with no power? Unless you put it into some sort of deep sleep mode, I hope I get that magic battery next time around! : )
We left my car in Charlotte airport at the end of October, so it wasn't particularly hot or cold; I don't expect the same result in winter or summer.

Sentry is known to drain 2-3% every day. At work I charged my car to 90%, unplugged for someone else to use it, and by the time I came back to my car after work I was at 88%. Cabin overheat protection was using 5-7% also, it's ridiculous.
 
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my truck wakes up and connects to WiFi on this schedule over last 24 hours (large block was while charging). It is currently plugged up which may impact some, but when I check,i Feel like I usually see this pattern

B93E969C-135B-479B-BA41-75B7A09C5CB0.jpeg
I should note I have not connected my truck to any wifi network as it's too far away from my unit but my guess would be that it would check in via LTE similarly.
 

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JamesPolk24

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I wish I could say that about my Tesla. If I leave my Tesla for a week at the airport, I better have a supercharger nearby for when I get back.
My personal experience with Model Y and reports on forums is that there is no significant vampire losses on Teslas anymore. Sure if using cabin protection in Las Vegas you might experience similar drain, but your Tesla is not representative of the Tesla fleet whatsoever. Every Rivian has this problem though.
 

JamesPolk24

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This is obvious but: one of my frustrations with excessive vampire drain is that with our larger battery packs and worse range efficiency the drop in measured miles and % lost equates to a larger kWh loss vs a smaller EV pack. In theory if apples to apples for communications/processing we should be getting lower % or miles lost not worse. In other words, there is even more room for improvement on Rivian's side to catch up. End of the day it is watts wasted that we should be measuring/holding as a baseline.
1% of LR Model 3=0.82kWh
1% of R1T= 1.35kWh (64.6% more watts lost)

With the understanding that any battery management issues may/likely scale with the battery size so that portion would be different but per above scholarly posts should be a smaller part of the issue if parked inside.
This is 100% true. Any of our measurements stated in % for Rivian versus almost any other EV is going to favor the Rivian. It would be more accurate to state kwh but that's another conversion step.
 

bael

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My personal experience with Model Y and reports on forums is that there is no significant vampire losses on Teslas anymore. Sure if using cabin protection in Las Vegas you might experience similar drain, but your Tesla is not representative of the Tesla fleet whatsoever. Every Rivian has this problem though.
On that note, I had a problem with the update prior to Halloween one (not in place to look up numbers). Truck didn’t think it had finished the update. It was checking in icy more frequently in that borked state. Feel like it was at least once an hour. Has since been resolved. I use the WiFi stats to keep an eye on the truck
 

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My personal experience with Model Y and reports on forums is that there is no significant vampire losses on Teslas anymore. Sure if using cabin protection in Las Vegas you might experience similar drain, but your Tesla is not representative of the Tesla fleet whatsoever. Every Rivian has this problem though.
Same with our 2021 Model 3, you'd have to not use it for a few days to see any range drop because overnight there is basically no range loss any longer.
 

BoltEVowner

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I'll trust the scientific studies done to determine this. It's less than 0.5% per month for storage losses. This thread is about the extreme vampire losses experienced with Rivians. Leave a F150 Lightning or Ioniq 5 for a month. Losses will be about what we lose in a day. This is not acceptable. We want to move to 100% EV vehicles, we can't be building nuclear plants dedicated to the vampire losses in the fleet.

One of many...

Jessie E. Harlow et al 2019 J. Electrochem. Soc
Journal of The Electrochemical Society
" A Wide Range of Testing Results on an Excellent Lithium-Ion Cell Chemistry to be used as Benchmarks for New Battery Technologies "
Also true for the Chevy Bolt EV and EUV. Unplugged in my garage for weeks without any appreciable loss.
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