In this paper, we argue that the electrification of cars is not simply a move from fossil fuel to electric energy. It also integrates the car into the household energy system in ways that challenge assumptions that car charging is made ‘smart’ primarily through AI-powered app-based digital services that help the user to make energy-, and cost-efficient decisions in terms of when to charge the car. As we will demonstrate in this paper, our design ethnographic study of how nine households learn to charge their cars according to their family routines and values shows how smart charging is not merely due to specific technological features. Instead, charging habits evolve through anticipatory experiences of what smart technologies come to mean to family members through their use. Based on our research, we recommend a smart charging service design that affords multi-operation ability, co-learning ability and social accessibility.