I got one of these ecoflow river backups 114 Ah to keep in the van, I have not used it yet and certainly wasn’t cheap but after researching a bunch of these settled on it. Figured better too much than not enough, and the portability still seemed pretty good. Agree with the comment that it would be nice if it had jump start capability too but I didn’t find any like that. I guess there might be some significant design challenges with adding that functionality? Like adding a defibrillator into a pacemaker
ECOFLOW RIVER TRAVEL BUNDLE... https://www.amazon.com/dp/B071P37MCZ...p_mob_ap_share
I’ll update when I’ve had a chance to use it but may be a few months.