Standard pack R1T DCFC curve

[EvAdventure13]

There have been questions about the true capacity of the standard batter pack sold thus far with the suggestion that they are software limited large packs.

I took my standard pack R1T to an EA 350 kw DCFC after work today to see when the rate starts to drop off. Not the best test as I had 70% SOC on arrival. Here is my charge rate as a function of SOC.

I went from 70% to 96% in 21 minutes, 33 kWh added. Hoping someone more knowledgeable than me can help make sense of this.

SOC	Rate
70	175
71	178
72	146
73	147
74	147
75	147
76	146
77	140
78	126
79	129
80	125
81	119
82	114
83	117
84	103
85	99
86	92
87	87
88	81
89	77
90	80
91	63
92	57
93	51
94	45
95	41
96	33

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[jjswan33]

Here is another thread I quickly found that has a lot of charging curve data.

charging-curve-summary-over-48-recent-dc-fast-charging-l3-sessions.22635

To me it looks like your curve is shifted ~15% with respect to this. Which is about what you would expect if standard is a software limited large pack.

 

[DuoRivians]

Its pretty good considering the 70% starting soc

 

[DuoRivians]

Btw, can you share the payload sticker that’s in the driver’s door frame? Curious how this compares. Thanks!

 

[Electrified Outdoors]

Agree on the 15% shift. Once I get above 70% I can usually only do 100 ish kw. Looks like he is able to hold above 100 kw all the way to 85%.

If my theory is correct standard pack should have about 101 kwh usable. SP 116 kwh

The range is equivalent to a large pack with 2 modules nerfed. They are using the same package and physically removing modules would cause other issues with thermals etc. makes sense they might nerf via software 1 or 2 modules out of the 9 total for large pack.

When they switch to LFP though this should change.

 

[Dark-Fx]

Here is another thread I quickly found that has a lot of charging curve data.

charging-curve-summary-over-48-recent-dc-fast-charging-l3-sessions.22635

To me it looks like your curve is shifted ~15% with respect to this. Which is about what you would expect if standard is a software limited large pack.

Means it should road trip surprisingly similarly, you just can't go as far the first leg, and can't charge longer to bridge a gap.

 

[EvAdventure13]

Btw, can you share the payload sticker that’s in the driver’s door frame? Curious how this compares. Thanks!

 

[EvAdventure13]

Agree on the 15% shift. Once I get above 70% I can usually only do 100 ish kw. Looks like he is able to hold above 100 kw all the way to 85%.

If my theory is correct standard pack should have about 101 kwh usable. SP 116 kwh

The range is equivalent to a large pack with 2 modules nerfed. They are using the same package and physically removing modules would cause other issues with thermals etc. makes sense they might nerf via software 1 or 2 modules out of the 9 total for large pack.

When they switch to LFP though this should change.

https://rivian.com/support/article/what-is-the-usable-kwh-capacity-of-your-battery-packs

• Standard: 106 kWh
• Standard+: 121 kWh
• Large: 131 kWh
• Max: 141 kWh

Standard pack has 80% usable capacity of the large pack.

Standard pack hits 100 kw at 85% soc which is .85 * 106 = 90 kWh capacity

large pack hits 100 kw at 70% soc which is .7 * 131 = 91.6 kWh capacity

They have the same payload. Standard battery pack was available in the shop on the same day as the announcement with significant inventory. In the shop the exact same configuration with 21 inch wheels can often be found in all battery capacity (standard , standard +, and large). Everything points to standard being a software limited large pack. Rivian probably did this to move stagnant inventory of R1Ts until LFP packs become available.

 

[Electrified Outdoors]

https://rivian.com/support/article/what-is-the-usable-kwh-capacity-of-your-battery-packs

• Standard: 106 kWh
• Standard+: 121 kWh
• Large: 131 kWh
• Max: 141 kWh

Standard pack has 80% usable capacity of the large pack.

Standard pack hits 100 kw at 85% soc which is .85 * 106 = 90 kWh capacity

large pack hits 100 kw at 70% soc which is .7 * 131 = 91.6 kWh capacity

They have the same payload. Standard battery pack was available in the shop on the same day as the announcement with significant inventory. In the shop the exact same configuration with 21 inch wheels can often be found in all battery capacity (standard , standard +, and large). Everything points to standard being a software limited large pack. Rivian probably did this to move stagnant inventory of R1Ts until LFP packs become available.

Nice find! Yes, that's what I was thinking. It was a demand trigger because originally they weren't supposed to release these packs until this summer.

 

[jjswan33]

Means it should road trip surprisingly similarly, you just can't go as far the first leg, and can't charge longer to bridge a gap.

Agreed. Wouldn't be a great choice for me but most people have no reason to buy anything more than the standard pack as long as it charges like this.

 

[EvAdventure13]

Agreed. Wouldn't be a great choice for me but most people have no reason to buy anything more than the standard pack as long as it charges like this.

If going for AT tires with plans to off road and camp , large pack is worth it. I live a strictly suburban lifestyle. I drive to work, throw the kids bikes and sports gear in the bed, occasionally transport larger items. 270 miles with a good DCFC curve + access to Tesla super charger network is all I need. I may end up buying this at lease end. My residual is $44,800. My only regret is I could have gotten the ATC for $500 had a I waited a week or two to order.

 

[Riviot]

This doesn't show payload, just GVWR. The other sticker will show payload.

 

[usofrob]

This is all very interesting. I wonder if they do plan on making a battery pack design change as part of the shutdown (as alluded to in an interview a couple months ago) that will allow them to make the cell chemistry change to have a real difference between the LP, SP+ and SP. Very possibly now is the sweet spot for getting a SP or SP+ because you get it for the cheaper price but it has the same battery pack. Hmmmm....

 

[LivingInKaos]

Agreed. Wouldn't be a great choice for me but most people have no reason to buy anything more than the standard pack as long as it charges like this.

Yeppers. Only those that have point A to point B issues (or C to D, F to G). It's the same with the max pack - it only really makes sense if you have a drive you do all the time that needs that extra little oomph to get you there. To have capacity just to have capacity is wasted on the daily driver.

 

[EvAdventure13]

This is all very interesting. I wonder if they do plan on making a battery pack design change as part of the shutdown (as alluded to in an interview a couple months ago) that will allow them to make the cell chemistry change to have a real difference between the LP, SP+ and SP. Very possibly now is the sweet spot for getting a SP or SP+ because you get it for the cheaper price but it has the same battery pack. Hmmmm....

From a business stand point I certainly hope they do so quickly. Selling large pack batteries for $9k less can't be good for profits.

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