Alkaline Zn-MnO₂ batteries are one of the most widely used battery chemistries. Significant research has been made to investigate the chemical processes in these batteries in an effort to prolong lifetime under high discharge rates. One promising candidate for this characterization is X-ray transmission microscopy (TXM), a technique which offers the ability to probe the internal structures of the battery, without dismantling the cell. In this work, we use an in-house TXM to take snapshots of commercially available AA alkaline Zn-MnO₂ cells at a series of discharge rates and temperature conditions. As the cells discharge, morphological changes are tracked as MnO₂ is reduced and Zn is converted to ZnO.