The 27-year-old and her husband, Matthew Goodwin, welcomed their second child, Audrey Jane Goodwin, at their Atlanta area home early Tuesday morning. The family then went to a hospital.
Her publicist told The Associated Press the baby weighs 8 pounds, 11 ounces and is 20 inches long. The couple have a son, Matthew Elijah, who was born in September 2010.
Battistelli says she's been "so incredibly blessed with a beautiful baby girl" and adds that big brother Eli is "so excited to have a little sister."
Battistelli was the first female vocalist in nearly 20 years to be named artist of the year at the 2011 Dove Awards. Her hits include "Free to Be Me" and "I'm Letting Go."