The "battle rounds" begin and the coaches enlist the help of the music industry’s top recording artists to offer their knowledge and skills as advisers. Adam Levine teams up with Ryan Tedder of OneRepublic, Blake Shelton with Cher, CeeLo Green with Miguel and Christina Aguilera with Ed Sheeran.
In this phase, the coaches pit two of their own team members against each other in a dueling duet. After the vocal face-off, each coach must choose which artist from their team is the strongest, and has the option of stealing losing artists from an opposing coach. Each coach has two steals during the battle rounds where their artists will proceed to the new knockout rounds. Carson Daly ("Last Call with Carson Daly") hosts.
"Team Blake Battle Reality" -- Pictured: (l-r) Sam Cerniglia, Cilla Chan, Brandon Chase, Brian Pounds, Ray Boudreaux, Monika Leigh, Blake Shelton, Austin Jenckes, Justin Chain, Shelbie Z., Emily Randolph, E. G. Daily, Holly Henry.
"Team Christina Battle Reality" -- Pictured: (l-r) Back Row: Jacob Poole, Destinee Quinn, Josh Logan, Lina Gaudenzi, Olivia Henken, Stephanie Anne Johnson, Briana Cuoco, Timyra-Joi; Front Row: Matthew Schuler, Michael Lynch, Jacquie Lee, Christina Aguilera, Amber Nicole.
"Team Adam Battle Reality" -- Pictured: (l-r) Tessanne Chin, Barry Black, Preston Pohl, Grey, James Wolpert,Adam Levine, Ashley DuBose, Will Champlin, Nic Hawk, Justin Blake, Donna Allen, Matt Cermanski, James Irwin.
Team CeeLo Battle Reality" -- Pictured: Back Row (l-r) Juhi, Lupe Carroll, Shawn Smith, George Horga Jr., Anthony Paul, R. Anthony, Tamara Chauniece Front Row (l-r) Keaira LaShae, Caroline Pennell, Kat Robichaud, CeeLo Green, Jonny Gray, Cole Vosbury.
Once the teams are set, the battle is on. Coaches will dedicate themselves to developing their team of artists, giving them advice, and sharing the secrets of their success, along with help from their celebrity advisers. During the battle rounds, the coaches will pit two of their own team members against each other to sing the same song together in front of a studio audience.