Ackley signed a minor-league contract with the Angels on Wednesday, Mark Feinsand of MLB.com reports.
Ackley is back with the Angels after spending all of the 2017 season with their Triple-A affiliate. The second overall pick in the 2009 draft will report to Triple-A Salt Lake, where he hit .261/.340/.376 across 116 games last year. He'll serve as organizational depth.