Looks like they got within three minutes of what I was hoping for. Roughly seven minute improvement for 10-80% is not bad. Still not understanding why smaller packs have faster 10-80 though.Interesting video comparing Tesla supercharger to EA. Looks like about 45 minutes roughly for 10-80%. Hoping the software update can cut 10 minutes off the 10-80% down to 35 minutes. 45 minutes is slower than the cars listed below according to Google AI.
Probably because they all have the same charge curve. For simplicity, if all stations supplied 150kw for the entire session, the max pack would take the longest to get to 80 of it's higher capacity. The smaller packs reach a particular percentage because less kw is needed to get there. A bigger gas tank takes longer to fill. The max pack max charge at higher rates than a small pack because it is still at a "lower" percentage, but still that takes time.
10-80 time is supposed normalize for different size batteries. I’m betting OOS did their test on a charger that is >250kw so the constraint would be the battery not the charger. My guess is that large and standard likely have larger hidden buffers and that is why they charge in shorter times. Eg 10-80 on a large/standard is really 10-70 because of hidden buffers and can sustain higher peaks since they aren’t as high up in the charge curve.
If all of the packs can charge armt ~210kw peak now, the smaller 53g cell pack will take less time to charge because it's limited by the 500A limit that Rivian has applied. The max pack peaks at about 1.5C. the large pack probably peaks at about 2C.
The peak rate that they charge the packs at is pretty slow relative to pack size, so making the pack smaller just allows them to charge closer to what they would ideally be charging the cells at. If the max pack were 800v the charging curve would probably look pretty similar to a lucid air dream edition's.
Can you imagine if the max pack charged at 300kw peak? One can dream
