Normal EVs can sit for a week and not have a dead battery. There is some value to having that trickle charge but not a ton. IIRC there was a solar powered Prius

Normal EVs can sit for a week and not have a dead battery. There is some value to having that trickle charge but not a ton. IIRC there was a solar powered Prius where the panel powered a cabin fan and that kinda makes sense.