Battery depots. Charging stations with a few score batteries each, so the load is spread across substations. Make the battery packs easily swappable and interchangeable so a vehicle can see it is low, go to a depot and swap out a depleted pack for a charged one.
Super-fast recharging, spreading the load and the cheapness of mass-production, standardisation and economies of scale.
It's a pity hot-swap battery packs will never catch on.