Reality-wise those proposals make a fair bit of sense. Certainly battery weight should not be significantly affected by their charge, for example.
On the gameplay side, my current playthrough has been the most interesting regarding vehicle dynamics. I’ve gone with a primarily solar vehicle, but its been very dicey keeping it decently powered, as the fridge has enough draw to substantially mute any recharge I get during the day, and driving around pulls power pretty hard, meaning my vehicle is not terribly mobile.
Still, I get decent range out of 5 storage batteries, and given a week or two of low draw, it does gradually recharge them IF the weather holds - and I’m running with a mini-reactor emergency power supply in case I find myself in trouble with lower battery reserves, but that chews through plutonium at a surprisingly brisk clip (I think 1 plutonium only lasts for about 50 in-game minutes or so?!) so I save it strictly for emergencies.
So altogether it feels pretty good game-wise, though the idea of running an ~10mt vehicle primarily via solar power is of course not very realistic.
