Traction battery with battery management system

In a traction battery for a battery-electrically driven mobile work machine, in particular a materials handling vehicle, which is designed as a high-performance battery (11) and has a battery tray (9), within which modules (12) are arranged, each of which is constructed from at least one battery cell, and with a battery management system (6) that comprises monitoring and control devices, components (8) and/or operating elements (5) of the battery management system (6) that are not integrated into the modules (12) are arranged adjacent to a side wall (2,3) of the battery tray (9) and are accessible via at least one opening (4,7) of the side wall (2,3).