Max Pack Battery Capacity Confirmed - 149kWh

[mkg3]

Would the degradation be worse if the max pack battery was used with the quad motor, because the quads can pull more max power/current?

I'm wondering if this is one of the reasons they don't do the max pack battery with the quad motor.

its because the range increase is incremental and probably not past 350 miles.

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[Supratachophobia]

Would the degradation be worse if the max pack battery was used with the quad motor, because the quads can pull more max power/current?

I'm wondering if this is one of the reasons they don't do the max pack battery with the quad motor.

No. They want to divorce from Bosch but the quad Enduro isn't ready for prime time. Degradation is more about charging behavior and age as opposed to draw. Also, they don't want to show their hand on how little of an efficiency increase that dual motors alone provide. There had to be as big of a delta as possible to justify releasing the max pack as is. And I still argue it's a huge miss.

 

[GhostAndSkater]

Would the degradation be worse if the max pack battery was used with the quad motor, because the quads can pull more max power/current?

I'm wondering if this is one of the reasons they don't do the max pack battery with the quad motor.

I would say in part, likely would have to restrict the peak power a bit, plus the low range increase that would make it a even worse deal

If Rivian does the smart thing, they would fit smaller Rivian motors on each wheel, don't need 2x the dual motor setup, but that goes against cost savings, which the really need right now

 

[MichaelD]

I am just adding 2FA support and multiple vehicles to my app so I threw it in there as well when you drill down into the vehicle details. Most will only have one vehicle to look at but a few lucky ones out there might have two:

Once I push this to TestFlight anyone can see their battery capacity. And maybe I should start logging it since every other field in the record changes (location, speed, SoC, odometer, drive mode, etc). Maybe this will change as the battery ages and the miles accumulate.

I can help with this on the 11th. Trading my quad R1T in for a performance dual max (one of the last yellow trucks off the line, couldn't resist).

 

[R.I.P.]

I can help with this on the 11th. Trading my quad R1T in for a performance dual max (one of the last yellow trucks off the line, couldn't resist).

Another QM to DM convert, congrats.

Hopefully you will be as happy with the upgrade as I am. In addition to the advantages of the drivetrain, the new T is just better put together than my last one was; a product of the factory getting things more dialed in. The doors close better, the fit/finish is better (only one glaring error on this one lol) and it feels tighter.

Big tip of the hat to Rivian on all the progress between my first rig & this one.

 

[Jiji]

I can help with this on the 11th. Trading my quad R1T in for a performance dual max (one of the last yellow trucks off the line, couldn't resist).

Happy to extract this but if you have an iPhone you can download the app and pull the data yourself - no need to share any account details. Just send me a private message if that is an option.

 

[Jiji]

And the max pack results are in courtesy of @MichaelD:

MichaelD’s Dual Motor Max Pack

 

[scottf200]

And the max pack results are in courtesy of @MichaelD:

MichaelD’s Dual Motor Max Pack

Thx.
"The Max Pack's available power is 142 kWh"

Very close to: 142.6 kWh = 149 * 95.7%

95.7% via:
https://www.batterydesign.net/rivian-r1t/

 

[Proxy]

There is one thing that everyone is completely overlooking. Is that 7777th cell in the Rivian Torch also using the new chemistry?

Same part number on my large and max. Both 6.4Wh.

 

[mkhuffman]

And the max pack results are in courtesy of @MichaelD:

MichaelD’s Dual Motor Max Pack

Thank you Rick and Michael! Now we finally know. And the EPA math doesn't work.

352 miles / 127 kWh = 2.76 mi/kWh
410 / 141 = 2.9 mi/kWh

Rivian is lying to us. There is no way just changing the battery will increase the efficiency by that much. No way.

I know, it is a magic battery.

 

[Supratachophobia]

Thank you Rick and Michael! Now we finally know. And the EPA math doesn't work.

352 miles / 127 kWh = 2.76 mi/kWh
410 / 141 = 2.9 mi/kWh

Rivian is lying to us. There is no way just changing the battery will increase the efficiency by that much. No way.

I know, it is a magic battery.

I've been saying this for months. But at least my disappointment is confirmed.

 

[usofrob]

Or for the R1S 400 / 142 = 2.82 mi/kWh

 

[Jiji]

Rivian is lying to us. There is no way just changing the battery will increase the efficiency by that much. No way.

My take is that no one is lying, these are the real EPA test results that were conducted under very controlled circumstances. I can accept that the Dual Motor R1 is more efficient than the Quad Motor R1 and that a Large pack is more efficient than a Max pack. I accept this because there are weight differences between two motors and four motors, fewer cells versus more cells, and the overhead of running the associated high voltage electrical loads.

But having owned a few EVs over the years I know very well that I will not see the EPA published efficiencies. After all I keep my cabin warmed or cooled as needed, blast the audio system, routinely exceed 60 mph, and generally treat myself very nicely, after all this is the purpose of driving a Rivian and not walking.

But if were running the EPA test cycle, I would turn off anything not legally required, dim or turn off that big display, top off the tire, be running in Conserve mode, ditch the spare tire, and hire a sophisticated test driver that has mastered the test course and weighs at most 80lbs soaking wet.

And the biggest factor of all affecting the efficiency is the ambient temperature and I'm sure they run the EPA test cycle at maximum efficiency. I don't have any Rivian results to share but I do have over a year of Mustang Mach-E 30-day moving averages for the past 12 months to think about.

 

[mkhuffman]

My take is that no one is lying, these are the real EPA test results that were conducted under very controlled circumstances. I can accept that the Dual Motor R1 is more efficient than the Quad Motor R1 and that a Large pack is more efficient than a Max pack. I accept this because there are weight differences between two motors and four motors, fewer cells versus more cells, and the overhead of running the associated high voltage electrical loads.

Rick, I can accept that also but Rivian is telling us the Max Pack is more efficient than the Large, exactly the opposite of what you said. And even if it is, there is no way it is that much more efficient.

They did the EPA testing of the Max Pack differently than they did the Large in order to hit the promised 400+ miles of range. If they tested it exactly like the Large Pack, they would not have a 400 mile range vehicle. So IMO they are purposely deceiving us. I call that lying.

 

[emoore]

Rick, I can accept that also but Rivian is telling us the Max Pack is more efficient than the Large, exactly the opposite of what you said. And even if it is, there is no way it is that much more efficient.

They did the EPA testing of the Max Pack differently than they did the Large in order to hit the promised 400+ miles of range. If they tested it exactly like the Large Pack, they would not have a 400 mile range vehicle. So IMO they are purposely deceiving us. I call that lying.

Then it’s the EPA that’s lying. No car company can just make up the EPA numbers.

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