Rivian Dashboard for Upcoming Longterm Phantom Drain Test

[Mattward439]

I would tend to use kWh for state of charge instead of percentage. That way, I get to feel the pain of losing 2 kWh per day (~0.75 mWh/year!) at $0.36/kWh off peak for phantom drain.

I've been gone 42 days with my 55% charged Rivian plugged in with change setpoint at 50%. So far my Wallbox charger is reporting 88.3 kWh delivered. So yeah, 2 kWh per day checks out. CAD$0.1416/kWh = CAD$0.28 per day or CAD$102 per year. Not nothing but yeah would appreciate seeing less phantom drain.

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[Cycliste]

My average daily phantom drain since 26 July

 

[Jiji]

Even like that andthe truck sitting in a garage at a balmy 50-60F, the operating system will come out of sleep 2-3 times per day for as much a 90 min each, loosing about 1% of charge per day.

You are way beyond my understanding of the subject, I would have thought that in shipping mode it would stay asleep.

I used to track my idle losses using an app of my own design (see this post) but gave up since I could never seem to do anything about them and patiently hoped Rivian might fix something via a software update.

Good luck with your experience and I hope you find something new about the R1 along the way.

 

[Supratachophobia]

As I am doing final preparations to ship our R1T Quad to Europe in Q1 2025 I have finally setup a detailed dashboard for the R1T with our Home Assistant instance, similar to what I have been using for our Tesla's. The unofficial Rivian API is still a bit limited but does provide a wealth of information that can be tracked over time.
The plan is to do a 5-6 weeks unplugged storage test over the holidays. I plan to post regular updates along the way and compare them to best in class measurements of other vehicles. In addition to the dashboard I have a history view that shows all these metrics over weeks and possible months.

Take a look and let me know what you think.

+1 for this project
+100 for home assistant

 

[fxstein]

Today was a good test for the dashboard as a software update became available. Even though disabled in the cars settings, the car downloaded the new update (~3 min) and prepared for the update (~7 min) all while in "Sleep" state. Did not wakeup the car overall. But as with any day prior the car continues to wake up 3x per day for 90 min or more each - relatively evenly spaced out. As many have seen before approx 1% or about 1.3kWh per day. For reference that is more than 10x worse than a Tesla Model Y parked at almost freezing temperatures.

 

[nomis]

I think I recall some members on the forum experimenting with disconnecting the 12v / hooking up a low amp battery tender to 12v for long storage to battle vampire drain. Not sure what the conclusion of that test was.
10x worse than Model Y is substantial! I would ask if we have a Rivian engineering resource to send this data to, but then again, they should already be aware right? Vampire drain issue has been a hot topic since day 1.

 

[CBRacerX]

I think I recall some members on the forum experimenting with disconnecting the 12v / hooking up a low amp battery tender to 12v for long storage to battle vampire drain. Not sure what the conclusion of that test was.
10x worse than Model Y is substantial! I would ask if we have a Rivian engineering resource to send this data to, but then again, they should already be aware right? Vampire drain issue has been a hot topic since day 1.

It was a success! Keep the 12v battery topped up and SOC doesn't change.

 

[ElGuano]

It was a success! Keep the 12v battery topped up and SOC doesn't change.

Interesting! What's the hypothesis? That the 12v drains quickly, requiring the high voltage pack to constantly charge it?

 

[CBRacerX]

Interesting! What's the hypothesis? That the 12v drains quickly, requiring the high voltage pack to constantly charge it?

Correct. Lots to read here https://www.rivianforums.com/forum/threads/gen-1-vampire-drain-possibly-solved-or-hacked.31506/

 

[VSG]

You might want to read all the posts/threads by @rivian_germany
https://www.rivianforums.com/forum/members/rivian_germany.10178/
He did this almost 2 years ago, and documented how to disconnect the HV battery and prepare the vehicle for shipping and restore the vehicle upon arrival. IIRC there was basically 0% HV battery loss.

Note also the shipping company, depending on who you use, will not allow the battery to be fully charged. Some limit it to 50% for example. That can affect your sitiuation significantly.

I personally would try to do what @rivian_germany did, rather than helplessly watching as your battery discharges and the container ship gets delayed ... The best strategy to deal with lack of service centers is IMO don't do things that might lead you to need a service center.

 

[shrink]

You might want to read all the posts/threads by @rivian_germany
https://www.rivianforums.com/forum/members/rivian_germany.10178/
He did this almost 2 years ago, and documented how to disconnect the HV battery and prepare the vehicle for shipping and restore the vehicle upon arrival. IIRC there was basically 0% HV battery loss.

Note also the shipping company, depending on who you use, will not allow the battery to be fully charged. Some limit it to 50% for example. That can affect your sitiuation significantly.

I personally would try to do what @rivian_germany did, rather than helplessly watching as your battery discharges and the container ship gets delayed ... The best strategy to deal with lack of service centers is IMO don't do things that might lead you to need a service center.

Yeah, @rivian_germany is a pioneer.

OP, if you can work with your shipping company to disconnect the 12V battery once the vehicle is in place you'll be just fine.

It was a success! Keep the 12v battery topped up and SOC doesn't change.

Yeah, I was the OP in the main thread on that topic. My R1S has actually lost just a bit - 2% in a little over 3 months. Part of that I believe was downloading and running 2 updates, though.

Bottom line - keeping the 12V charged nearly stops vampire drain from the HV battery.

 

[fxstein]

Yes read them all and reached out to multiple European Rivian owners before I started. As you say it depends on the shipping company. They all require and offer different things.

If there is an option to disconnect I will do that. My 2023 has the single battery and supercap setup. Disconnecting the HV relay is a single cable, so is the battery disconnect. I can do that in less than 10 min.

The drain test is my fallback. Just about to post a one week update into a 6+ week storage test. Running at 5-6% per week now that everything is setup correctly. That is 50-60% discharge over 10 weeks.

It also seems Rivian has a safety feature built in: once the HV battery drops to a low state of charge it will gracefully brick itself by stopping to charge the 12V battery and letting that small battery deep discharge and eventually kill itself. At the same time it basically stops the drain on the HV battery and can go for months beyond that point. In that case you might need a new 12V battery and a reset in the service menu.

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