Non-contact ultrasound was shown to be a promising NDE technique for battery electrodes to reduce product waste, improve quality control, and increase confidence in battery safety. The basic model of the propagation of ultrasound waves through air and an electrode film enables both quantitative and qualitative analysis of electrodes, highlighted with different electrode treatments and comparisons. Ultrasonic scans show mass distributions and inhomogeneity throughout the electrode, an advantage over optical images, regardless of whether it is lab-fabricated or machine-made. Calendering can be observed as an increase in the average acoustic density of the electrode. Metal contaminants also increase the acoustic density of the electrode, both when visibly on top and embedded within, an advantage over existing optical methods. The acoustic density model can be further improved by accounting for the electrode-current collector interface (possibly with transducers of higher frequency), acoustic attenuation in the solid materials, and calculation of thickness and speed of sound at every point via concurrent transmission and pulse-echo ultrasound scanning.