Headphone battery 1 (IMAGE) University of Texas at Austin Caption The researchers used advanced imaging technology, such as x-ray to investigate batteries in wireless headphones. Credit The University of Texas at Austin | Cockrell School of Engineering Usage Restrictions N/A License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.