Online resources that offer practice exams and questions for the 473 Battery Exam for United States Postal Service jobs include: UsaPostalExam.org, Tests.com, and 4Tests.com. PostalWork.net recommends purchasing a copy of "Post Office Jobs" by Dennis V. Damp.
UsaPostalExam.org, Tests.com, and 4Tests.com do not have any affiliation with the United States government or the Postal Service, but do provide guidance and resources for qualifying for a position with the USPS. The book "Post Office Jobs" by Dennis V. Damp provides a complete study guide and practice exam for the 473 Battery Exam. "Post Office Jobs" is currently in its sixth edition.