They answered that questions on FAQ 🙂
3.Can EMO go back to his skateboard and charge himself?
EMO can’t go back to his charger now. If the battery is low, he will make sounds to ask you for help, or go into the sleep mode. Later , we will launch a smart charger called “EMO home stage” so that EMO can go home on his own and charge himself. You can buy the “home stage” separetely.