Systems and methods for charging electric vehicles that define a charging schedule for an electric vehicle based on one or more charging preferences of an operator of the vehicle and based on at least one current value of a dynamic attribute of an electric charge provider. Such systems and methods may include a graphical user interface adapted to display a unitary vehicle charge indicator element having (i) a first portion indicative of an amount of charge residing in a battery of the electric vehicle, (ii) a second portion indicative of an uncharged capacity of the battery of the electric vehicle, and (iii) a third portion comprising a slider by which an amount of charge may be specified.