At sisters 1 1/2wks ago. my 2 yo found disc battery. gave to me. sis said it was only one. dark brwn stool today. other symptoms if he ate one by now?

Battery: Common problem. We are always concerned that this could result in aspiration into the lung and cause a breathing problem. However, if it occurred 1 1/2 weeks ago, chances are he has already passed it. I'd keep an eye on his bowel movements to make sure it's not a persistent occurrance. If it is, you can always discuss it with your doctor.