Kennith, do you mean something like this? "Rivian patents “removable auxiliary battery” for its R1T electric pickup truck"
It should help to enable bigger adventures or long-distance towing.
electrek.co
I must say Rivian is forward thinking.
"Federal regulations mandate that an EV’s battery pack, arguably its most costly component, be covered for at least eight years or 100,000 miles. For its part, Hyundai extends this to lifetime coverage on the new-for-2019 Kona Electric.
Automakers’ warranties also include specific coverage against corrosion. However, this applies to body panels that have been completely “rusted through,” and not to mere paint bubbling. In addition, many manufacturers include roadside assistance programs with value-added features that rival the benefits of auto-club memberships.
THE FINE PRINT
Be aware, however, that every new-vehicle warranty contains exceptions and exclusions. For example, some automakers only cover an EV’s battery pack against total failure, while others, including BMW, Chevrolet, Nissan, Tesla (Model 3) and Volkswagen will replace it if it reaches a specified reduced capacity percentage, usually 60-70%, while under warranty.
Some brands will transfer whatever remains of the original warranty to a second owner, while others may impose limitations on this. For example, the 10-year powertrain warranty on Hyundai, and Kia models applies only to the original buyer, with a subsequent owner receiving whatever remains of five years’ coverage from the date on which it was originally sold."
Source:
https://insideevs.com/news/342221/which-electric-cars-offer-the-best-warranties/
There is no word yet on Rivian's warranty
Papillon