Based on reported galvanostatic charge and discharge data of a Li/P(EO)(8)LiClO4/TiS2 cell, heat generation rates within a battery during the USABC Dynamic Stress Test (DST) were calculated and compared with those during the Simplified Federal Urban Driving Schedule (SFUDS) dynamic power profile. Also, calculations of temperature rise in the C/Polymer electrolyte/LiMn2O4 batteries of Sandia conceptual designs for a Ford van and GM Impact, during a DST/Fast Charge/DST/Full Charge cycle were conducted with a three-dimensional thermal model.