Let me preface this by saying I am *not* trying to get any significant increase in milage while camping with an EV (Rivian). I get the amount of power the car battery contains, and comparatively how little power is coming from solar panels.
All I'm really looking to do is 1) offset the power loss from using various electric appliances (induction cooktop, powered cooler, etc.) and 2) offset the vampiric discharge we're losing from the car being parked a few days. And it doesn't seem like this specific question's been asked here for a few years.
It does seem like, on a reasonably sunny day, with enough panels I should be able to get between 1-2kw of solar for at least 6-8 hours, which should address the power losses above. My question is the best way to get that into the car.
As far as off-the-shelf systems, something like the Pecron F3000LFP could do the job: 1600W of solar charging, not too expensive.
https://www.pecron.com/products/pecron-f3000lfp-solar-generator-3600w-3072wh?variant=44731306344636
But I'd like to improve on that if possible - it irks me to carry around a heavy battery when the car itself is a giant battery, and it seems like I'm losing energy while charging the car by going from the portable battery to AC to DC. I haven't seen anything off-the-shelf that's more focused on dumping solar watts into an EV without the battery component of a solar generator - any thoughts on that?
And does anybody have any experience with a DIY or custom situation? I've heard suggestions that people doing marine or RV solar installations might be able to put something together, but don't have any personal experience.
Thoughts? Thanks!