The O's boosted their firepower on deadline day by snapping up the striker on loan from Millwall for an initial month.
Boss Russell Slade made his move as top scorer Kevin Lisbie remains on the sidelines with a hamstring injury.
Slade must decide whether to start Batt or stick with Charlie MacDonald and David Mooney, who drew a blank in the goalless draw with Swindon in midweek.
He may decide to hold the new boy back for Tuesday night's Johnstone's Paint Trophy area final against Southend, for which MacDonald is cup-tied.
Fellow forward Michael Symes has joined Burton on loan while centre-half Ben Chorley could be in opposition after joining Boro on deadline day.
Skipper Nathan Clarke is still building up his fitness following an ankle injury.