Abstract: Systems, circuits, and methods are disclosed for charging battery cells by generating a shaped charge signal that is shaped as controlled through a signal shaping generator. In one example, one or both of a pair of transistors may be controlled with a pulse-width modulation (PWM) signal with a duty cycle. The PWM signal is applied to the gates of the respective transistors to produce a sequence of pulses, which when applied to an inductor, produces a shaped waveform that may be applied to the battery. In an aspect, the duty cycle of the PWM controlling the operation of the transistors correlates to a charge current applied to the battery, such that a higher duty cycle of the PWM control signal results in a higher current applied to charge the battery. The signal shaping generator utilizes a target shape to begin shaping a charge signal for the battery.