Sennheiser BA 40 Rechargeable Battery Pack

The BA 40 powers Sennheiser's SpeechLine Digital Wireless tablestand and boundary transmitters, the fixed-position mics used on boardroom tables and dais surfaces. Its 2.1 Ah cell is sized for a full meeting day between charges rather than a stage performance, matching the duty cycle of a conference-room deployment.

Because SL Tablestand DW and SL Boundary DW share the same battery, an integrator provisioning a multi-room install can standardize on one spare-battery SKU across every transmitter in the building.