Amber ate an AA battery on Christmas eve. My granddaughter was changing the batteries in her camera and dropped one. Amber must have thought it was a treat. She caught it and it was gone. She didn't even chew it. I have been checking her carefully, but she has had no ill effects so far. I have probed her stomach to see if she has any tenderness and she hasn't. She is as active as ever. How long should it take to pass through her system? I haven't found any trace of it yet [three plus days].