Rivian R1S Fire Aftermath Highlights the Risks of Home Charging via Extension Cords

A set of images circulating on the Rivian subreddit shows an R1S with its front end heavily burned, alongside significant fire damage to the garage beside it. According to the person who posted the photos, the scene was spotted while out walking a dog, and a nearby resident said the fire started while the electric SUV was being charged through an extension cord. The vehicle’s owners reportedly escaped unharmed, which is the most important detail in an otherwise grim set of pictures.

That said, the cause should be treated with caution. No fire department report has surfaced to confirm what ignited the blaze, and there is no verified information about which cord, outlet, or charging configuration was in use. One commenter in the thread suggested the setup looked more like a heavy-duty NEMA 14-50 RV-style cord than a flimsy household cable, though that is only a reader’s interpretation of the images.

Regardless of what happened in this specific case, Rivian’s guidance on the topic is unambiguous. The company’s owner’s manual instructs drivers not to plug its Portable Charger into an extension cord, power converter, power strip, or any kind of power adapter, and it also warns against outlets that are damaged, loose, or worn. The reasoning is straightforward: the J1772 portable charger can pull up to 32 amps and deliver as much as 7.6 kW when connected to a 240-volt outlet. It may not sit at those peaks continuously, but it pushes substantial current through the cord for hours at a stretch — precisely the conditions under which undersized wiring, a compromised connection, a coiled cable, or an overheating plug can become dangerous.

Predictably, the Reddit discussion split into the usual camps, with some arguing that a correctly rated heavy-duty cord can safely handle the load. That may be true in theory, but Rivian’s language leaves no room for interpretation: the automaker simply says not to use one. For EV owners charging at home, the takeaway is less about assigning blame in an unverified incident and more about following manufacturer instructions — using a properly installed outlet and the equipment supplied with the vehicle. In this instance, heeding that advice might have kept an R1S and a garage intact.