Finished off getting 2 Panasonic 3400mAh unprotected with button, and 2 the same, but no button, for each of us.
I got 2 900mAh 18350's too, for driving with. I've got a Nano Kit for my Russkfl too. It'll be nice and small for driving with that set up
I got them REALLy cheap from a German firm I've used before, with free postage, 85 for 10 batteries and a bottle of flavor, and 8 of the batteries are good ones

(PM if you're interested in the address)
Vaping and driving's very particular, as a pass-through gets muddled up with the gear stick, and a 18650 Mod, plus electronics, plus tank or whatever is too much for me.
So I go for convertible Mods with a 18350, plus a recharged battery in my bag, and now the Nano Kit for my RussKfl, and juice for refills.
Or ARO glassomizer's are good, and light, but you do need a spare coil with you, as they some times just drop dead without warning.
When I think about it, it's almost like having a small baby all over again. Nappies, bottle, fruit juice, cleaing wipes, and all the kit and kaboodle.
But it doesn't cry in the middle of the night

I do, when I can't get my hands on my PV.
I've got one of those USB-mains pass-throughs without a battery (But you need around 2amps from the USB! They don't put that in the sales pitch, crafty so-and-sos!). I just follow the cord and get my tank. The USB thing's not very big, under a cm wide, about 3cm long, with ego/510. Cost around 5-10, plus a suitable plug!
I don't know if it works on a car.
For me it's more of a bed thing

Or for a passenger, but I think I'll shut up now as it's late and I'll end up saying something I'll regret later.

Night night!