I use small handheld Type S battery power brick/bank to jump start my dodge ram 1500 V8 trucks several times now. Neat little blue colored dude will fit in the glove compartment and has saved me from having to call for road service or beg for a jump start with cables from another driver. I have no idea if this would work on EV vehicles. I have a slightly larger power bank from another manufacturer for my second truck and it has worked great. Both are quick and easy with no long cables and mess free.
I also carry regular jumper cables for backup