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[bajadahl]

I cannot. Until I ask rivian. But I read it on the internet, ano everything on the internet is true

I’m the member in Austin that was told there was a regular 12 volt battery under a panel in the frunk. I did not see it but I took them at their word. Not sure why they would have mislead me about that though….. so I stand by my statement until proven otherwise.

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[crashmtb]

I’m the member in Austin that was told there was a regular 12 volt battery under a panel in the frunk. I did not see it but I took them at their word. Not sure why they would have mislead me about that though….. so I stand by my statement until proven otherwise.

Seems unlikely it would have changed since. too bad, I was excited at the idea of not having a 12v battery to deal with. I don’t suppose they mentioned wether or not the 12v battery is topped up when the truck is plugged in and charging?

 

[DucRider]

Seems unlikely it would have changed since. too bad, I was excited at the idea of not having a 12v battery to deal with. I don’t suppose they mentioned wether or not the 12v battery is topped up when the truck is plugged in and charging?

Almost certainly. One step better is topping up the 12V while plugged in and not charging - this is the scenario where you are most likely to have the 12V take a dive.

Hyundai has an setting on their EVs that will occasionally check 12V battery voltage while parked (every 3 hrs?) and top it up from the HV battery if required. There is a lower limit on HV SOC for this to occur (30%?).

 

[crashmtb]

Almost certainly. One step better is topping up the 12V while plugged in and not charging - this is the scenario where you are most likely to have the 12V take a dive.

Hyundai has an setting on their EVs that will occasionally check 12V battery voltage while parked (every 3 hrs?) and top it up from the HV battery if required. There is a lower limit on HV SOC for this to occur (30%?).

I suppose the 12v battery in an EV lasts much longer than one in a combustion engined car, with not having to start an engine. Here car batteries last 2-3 years if you’re lucky. -40 winter, +40 summer will do that..

 

[SANZC02]

I suppose the 12v battery in an EV lasts much longer than one in a combustion engined car, with not having to start an engine. Here car batteries last 2-3 years if you’re lucky. -40 winter, +40 summer will do that..

Probably about the same. I just replaced one in a Tesla 5.5 years in Southern California, very similar to how long they lasted in my ice vehicles.

 

[bajadahl]

Seems unlikely it would have changed since. too bad, I was excited at the idea of not having a 12v battery to deal with. I don’t suppose they mentioned wether or not the 12v battery is topped up when the truck is plugged in and charging?

Unfortunately I didn't get very many questions answered in Austin... It was really an event for lawmakers at the Capitol. So I was there kind of crashing the party and trying to stay out of the way. It also seems like that was an eternity ago... even though it was just late April. The extent of the battery question was that there was one and it was easily accessible .

 

[electruck]

Unfortunately I didn't get very many questions answered in Austin... It was really an event for lawmakers at the Capitol. So I was there kind of crashing the party and trying to stay out of the way. It also seems like that was an eternity ago... even though it was just late April. The extent of the battery question was that there was one and it was easily accessible .

And I thank you once again for asking about the 12V.

 

[DuckTruck]

I suppose the 12v battery in an EV lasts much longer than one in a combustion engined car, with not having to start an engine. Here car batteries last 2-3 years if you’re lucky. -40 winter, +40 summer will do that..

Crash,

Just to be safe, I wouldn't assume that not having to start the engine will give an EV's 12v battery greater life. If you're driving it frequently, you may be alright. I don't drive my ELR much, and it went dead early, after its third Winter of sitting in the garage. After replacing it, I decided to place a trickle-charger on it to keep it from being slowly drained.

In all modern cars, there is a limited amount of "phantom" draw that takes place. I know some very smart people here have weighed in on the actual drain rate, but I can say that mine went out James Dean style: Way too young, still good looking, and in a completely preventable fashion (chill out! He died at 24, would've been 90 now).

I assumed that following the company's advice and keeping the car plugged in would help, but the Cadillac folks said that the 12v battery works independently (James Dean, anyone?) and wants the car to be driven regularly (Hello!?). Taking the Winters off isn't good for the battery (especially "North of Nowhere") so the new one has a trickle-charger to keep it company, topped off, and ready to roll. Of course it differs vehicle by vehicle, but every battery wants to keep from being drained by fans (BMS), and other things clamoring for its attention.

Others may feel differently, but if your car sits for any length of time, especially in the cold, don't be a Rebel Without a Clue and make a Giant mistake. Plug in, tune out, and turn (it) on!

 

[CommodoreAmiga]

It's a bit a a brain-scratcher why EV manufacturers wouldn't build a "battery tender" circuit into their vehicles. At least while it's plugged into an EVSE.

 

[R_1_T]

It's a bit a a brain-scratcher why EV manufacturers wouldn't build a "battery tender" circuit into their vehicles. At least while it's plugged into an EVSE.

Simple answer is most likely that the typical 12V battery failure/replacement cycle occurs outside of warranty. Why would they add the cost?

 

[Babbuino]

Not a pic or video but a heads up

 

[Autolycus]

Not a pic or video but a heads up

Can't see the post. Is it gone or is that just because I refuse to have a Facebook account?

 

[Babbuino]

Can't see the post. Is it gone or is that just because I refuse to have a Facebook account?

As a firefighter and Day 1 Pre-order holder for both the R1T and R1S, I feel very honored and privileged to be asked to review and comment on the R1T First Responders Guide, which I just received today.

We come across every vehicle under the sun, each with different characteristics, equipment, and dangers, so these guides play a vital role in how we approach each scenario.

Hoping to never have to use it, but at least I will know I had a hand in making it better for my fellow first responders.

Due to the NDA I signed, I cannot share details at this stage, but these do become public and are posted on manufacturer sites and at NFPA

https://www.nfpa.org/Training-and-E...hpfFiZyI-OmiI8RGGKp9ahs8_uxPAtOJ7IHHSPJ1oW794

 

[CommodoreAmiga]

Simple answer is most likely that the typical 12V battery failure/replacement cycle occurs outside of warranty. Why would they add the cost?

The last 3 of 4 new vehicles I've bought have had a 12V battery replaced, under warranty. Considering a Battery Tender Jr retails for under $40 (and the retailer and Deltran are making profit on that) I have to imagine the cost to the vehicle manufacturers would be significantly less than that.

A cheap AGM 12V battery is over $150, and they can cost quite a bit more than that. Plus there's the labor the dealer has to be compensated for, as well.

Even assuming retail cost, and no labor, one battery replacement under warranty could have covered the cost of ~4 battery tenders. In reality, I think it would cover many more than that. There's also the "customer satisfaction" aspect to consider.

 

[Beanejar]

As a firefighter and Day 1 Pre-order holder for both the R1T and R1S, I feel very honored and privileged to be asked to review and comment on the R1T First Responders Guide, which I just received today.

We come across every vehicle under the sun, each with different characteristics, equipment, and dangers, so these guides play a vital role in how we approach each scenario.

Hoping to never have to use it, but at least I will know I had a hand in making it better for my fellow first responders.

Due to the NDA I signed, I cannot share details at this stage, but these do become public and are posted on manufacturer sites and at NFPA

https://www.nfpa.org/Training-and-E...hpfFiZyI-OmiI8RGGKp9ahs8_uxPAtOJ7IHHSPJ1oW794

Great to hear that there‘s some review from professionals. ? Trauma surgeon here… keep asking how I can hook up my lights and sirens for my R1S (no definitive answer yet), in addition to asking safety/impact issues from First Responder perspective given my role and injuries we may see/changes in extraction, etc.

Yet another indicator of sensible choices…the fact that they’re asking professionals for review is reassuring of the path and outcomes. Thank you for your thoughtful review - we’re grateful you’re taking the time.

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