On radiographs, (A) a lithium coin-cell battery/button battery has a double-ring or halo sign in appearance; (B) coins have a homogenous appearance. Reproduced with permission from KR Jatana. Credit: OTO Open (2026). DOI: 10.1002/oto2.70266
A recently released child-safety battery designed to reduce the danger from accidental ingestion is showing…