Sennheiser BA 40 Rechargeable Battery for SL Tablestand 133-S DW and SL Tablestand 153-S DW

Dedicated rechargeable battery for Sennheiser SpeechLine Digital Wireless tablestand microphones

The Sennheiser BA 40 is a dedicated rechargeable battery designed for the Sennheiser SL Tablestand 133-S DW and SL Tablestand 153-S DW wireless conference microphones. These tablestands are part of the Sennheiser SpeechLine Digital Wireless platform, used in boardrooms, conference rooms, council chambers, and legislative facilities for wireless table microphone deployment.

The BA 40 provides the internal power for the wireless tablestand to operate without cables running to each table position, maintaining the clean, wireless aesthetic and flexible table layout that the SpeechLine system is designed to deliver. As a spare or replacement battery, having extra BA 40 units ensures that tablestand microphones can be quickly powered up for back-to-back meetings without waiting for recharge cycles.

Key Features

• Rechargeable battery designed for SL Tablestand wireless microphones
• Compatible with SL Tablestand 133-S DW and 153-S DW
• Enables cable-free table microphone deployment
• Quick swap for uninterrupted operation between meetings
• Accurate charge level reporting on the tablestand
• Genuine Sennheiser OEM battery for guaranteed compatibility

Professional Applications

Commonly deployed in church, house of worship, and professional AV environments.

• Conference room and boardroom wireless tablestand microphones
• Government and legislative chamber table microphone systems
• Multi-room conference facilities with shared tablestand inventory
• Replacement battery for aging original packs

Frequently Asked Questions

How long does the BA 40 power a tablestand microphone?

Runtime depends on the tablestand model and usage pattern. SpeechLine tablestands are designed for full-day meeting operation on a single charge. Consult Sennheiser's SpeechLine documentation for specific runtime specifications.

Can I use the BA 40 in other Sennheiser wireless products?

No. The BA 40 is designed specifically for the SL Tablestand 133-S DW and 153-S DW. It is not compatible with other Sennheiser wireless transmitter families.

Related Equipment and Workflow Compatibility

The BA 40 is designed for SpeechLine Digital Wireless tablestands. It works with the SL Tablestand 133-S DW and 153-S DW and charges via the tablestand's integrated charging system or an external charger.

Why Professionals Use This Type of Product

• Spare batteries enable rapid turnaround between meetings
• Maintains the cable-free table layout of the SpeechLine system
• Accurate charge reporting prevents unexpected microphone shutdowns
• Essential for high-use conference facilities with back-to-back sessions

Additional Compatibility Information

The Sennheiser BA 40 is a rechargeable battery for the SL Tablestand 133-S DW and SL Tablestand 153-S DW wireless conference microphones in the SpeechLine Digital Wireless platform.