R2 / R3 battery pack photos from RJ

[srh]

I believe it’s referred to as a skateboard platform?

I'm definitely not in the auto industry, but I believe this is not what they call a skateboard platform. I believe that refers to more of a body on frame type configuration where the battery pack, suspension, frame, wheels, etc. are all connected and the body is bolted to the "skateboard".

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[srh]

If your estimation is correct, that is 30,464 Wh per module. If they can fit six modules into the R1T, we finally have the 180 kWh they promised! LOL.

Five modules = 152 kWh, which is better than what the R1 has now. I wonder if they will be used in the Gen3 R1? I really hope they put 1000V charging capability in the Gen3 R1.

That would be nice! I think the total if they change to the larger battery would be lower since it is a bit wider of a cylinder which I don't think would be a 1 for 1 swap. They are also a bit taller so you'd loose a little headroom in the cabin but you'd have to think they will take advantage the newer battery type?

 

[TexasBob]

That is quite small for battery life and does make me hesitate when commuting for me will be 90 miles a day to work and I had planned to keep the car for a good 8+ years. I only have one car so it will be my only transportation.

2,000 cycles x 300 miles = 600,000 miles. Unless you have a seriously long commute you will be fine for 8 years. (A cycle is 1 complete charge and discharge. A 50% - 80% charge / discharge = 30% of a cycle).

 

[captainjp]

I'm definitely not in the auto industry, but I believe this is not what they call a skateboard platform. I believe that refers to more of a body on frame type configuration where the battery pack, suspension, frame, wheels, etc. are all connected and the body is bolted to the "skateboard".

You just described what the R2 platform is. Lol

 

[srh]

You just described what the R2 platform is. Lol

Haha, I stand corrected. I always thought the structural battery pack was an evolution past the skateboard.

 

[theonetruestripes]

That is quite small for battery life and does make me hesitate when commuting for me will be 90 miles a day to work and I had planned to keep the car for a good 8+ years. I only have one car so it will be my only transportation.

So 1200 cycles fast charged and 2000 “normal” charged. I think I say the range was quoted as 300 miles? There is going to be a top and bottom buffer as well so driving the full range will be close to but not an actual full cycle, but lets ignore that.

So normal cycles gets you 600,000 miles, with a 90 mile commute (round trip?) you get 6,666 trips, 5 days a week 52 weeks a year gets you 25.6 years. A lot longer then most people keep a car.

If you exclusively fast charge it it is 360,000 miles. A mere 4000 trips. Or 15.38 years. Longer then most people keep a car, but not as long as a car tends to stay on the road.

Let’s see, your target is 8 years? Try not to trade the 90 mile commute for a 281 mile commute (or 168 if you are going to exclusively fast charge).

Note: this is envelope math, so not a guarantee, other factors may apply, bur from the cycle “limit” this isn’t a problem!

 

[emoore]

So 1200 cycles fast charged and 2000 “normal” charged. I think I say the range was quoted as 300 miles? There is going to be a top and bottom buffer as well so driving the full range will be close to but not an actual full cycle, but lets ignore that.

So normal cycles gets you 600,000 miles, with a 90 mile commute (round trip?) you get 6,666 trips, 5 days a week 52 weeks a year gets you 25.6 years. A lot longer then most people keep a car.

If you exclusively fast charge it it is 360,000 miles. A mere 4000 trips. Or 15.38 years. Longer then most people keep a car, but not as long as a car tends to stay on the road.

Let’s see, your target is 8 years? Try not to trade the 90 mile commute for a 281 mile commute (or 168 if you are going to exclusively fast charge).

Note: this is envelope math, so not a guarantee, other factors may apply, bur from the cycle “limit” this isn’t a problem!

And it's 1200 or 2000 cycles with 80% capacity still. It's not like the battery cells are going to die just reduced capacity. I get a lot of people asking me what I'm going to do when my Rivan battery dies or my solar panels stop working after 25 years. Seems like a lot of the public doesn't understand batteries or solar at all.

 

[Riviot]

Just seems like a small number vs other packs out now.
Plus...
They should have gone 777 (Jackpot)

^RJ at the next press event

 

[Viking80]

That is quite small for battery life and does make me hesitate when commuting for me will be 90 miles a day to work and I had planned to keep the car for a good 8+ years. I only have one car so it will be my only transportation.

Keep in mind when they cycle test cells, it’s in a thermal chamber at a constant temp and cycles between charge and discharge with only a short break in between. There is no liquid cooling. You will not use your vehicle like the cells are tested. YMMV. The way most people use their vehicle and liquid cooling will greatly increase the life of the cells.

A 90 mile commute will be no problem for 12+ years with those cells and cooling.

 

[theonetruestripes]

with 80% capacity still

Yep, I’ve answered that question various was in the past. Like “oh at 80% capacity after a million miles my grand kids will be fine with it, but irritated they can’t get a new car because this one still works!”, or “at 80% capacity the battery is still good for a home battery backup...and replacement batteries ought to be far far far cheaper if anyone really wants to refer a 40 year old car”...

Or hey I drive more commuting miles then most and I’ll still be dead by the time that happens...

I blame...(checks mug) yep! Haven’t finished my first coffee yet!

 

[theonetruestripes]

Keep in mind when they cycle test cells, it’s in a thermal chamber at a constant temp and cycles between charge and discharge with only a short break in between. There is no liquid cooling.

Seriously? That’s nuts! No wonder Teslas that have been 100% fast charged have lasted 900k miles! (I know, I know, it isn’t popular to praise Tesla, but hey, what the entering team did was frequently amazing...)

(also: no I don’t know how many Teslas have failed before 900k miles due to battery issues, so I may as well be talking about the one mythical Volvo to hit 300k miles on the original engine and transmission, but I think it is fair)

 

[JasonK]

Looking at the pics the top of the battery has a cap on it. If it is part of the floor it may be possible to open the top of the battery pack to replace any bad cells if one ever fails. This would make for easy battery repair.

 

[captainjp]

Haha, I stand corrected. I always thought the structural battery pack was an evolution past the skateboard.

I think the idea is that it mimics a skateboard deck. Wheels and battery integrated into the base. Makes for a much lower center of gravity, which is beneficial for an SUV which traditionally had much higher COG’s

 

[captainjp]

Yep, I’ve answered that question various was in the past. Like “oh at 80% capacity after a million miles my grand kids will be fine with it, but irritated they can’t get a new car because this one still works!”, or “at 80% capacity the battery is still good for a home battery backup...and replacement batteries ought to be far far far cheaper if anyone really wants to refer a 40 year old car”...

Or hey I drive more commuting miles then most and I’ll still be dead by the time that happens...

I blame...(checks mug) yep! Haven’t finished my first coffee yet!

 

[DuoRivian]

I wonder what the cooling will be like and if they learnt lessons from R1.

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