Sennheiser BA 70 Rechargeable Lithium-Ion Battery Pack for EW-D SK and EW-D SKM-S

Dedicated lithium-ion rechargeable battery for Sennheiser Evolution Wireless Digital transmitters

The Sennheiser BA 70 is a lithium-ion rechargeable battery pack designed for the Sennheiser EW-D SK bodypack transmitter and EW-D SKM-S handheld transmitter. As the dedicated power source for the Evolution Wireless Digital platform, the BA 70 provides accurate battery level reporting on the transmitter and receiver displays, predictable runtime for professional event planning, and convenient recharging via the EW-D charging infrastructure.

The BA 70 is the primary rechargeable battery option for EW-D wireless systems, and it is the recommended power source for professional deployments where consistent performance and accurate remaining-capacity monitoring are essential. Having spare BA 70 packs ensures quick turnaround between events and eliminates reliance on disposable batteries for the EW-D platform.

Key Features

• Lithium-ion rechargeable battery with consistent voltage output
• Compatible with EW-D SK bodypack and EW-D SKM-S handheld transmitters
• Accurate battery level display on transmitter and receiver
• Quick-swap design for minimal downtime between charges
• Charges via EW-D compatible charging infrastructure
• Genuine Sennheiser OEM battery for guaranteed performance

Professional Applications

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

• Primary power for EW-D wireless systems in touring and events
• Worship and corporate installations using EW-D wireless microphones
• Theater and broadcast productions with daily EW-D transmitter use
• Spare battery inventory for multi-transmitter EW-D deployments

Frequently Asked Questions

Does the BA 70 work in both handheld and bodypack EW-D transmitters?

Yes. The BA 70 is compatible with both the EW-D SK bodypack and EW-D SKM-S handheld transmitters, providing a single battery type across the entire EW-D transmitter lineup.

Can I use AA batteries in EW-D transmitters instead?

EW-D transmitters also accept standard AA batteries. However, the BA 70 provides more accurate battery monitoring, consistent runtime, and lower per-use cost than disposable cells.

Related Equipment and Workflow Compatibility

The BA 70 is the dedicated battery for the Sennheiser Evolution Wireless Digital (EW-D) platform, compatible with all EW-D SK and EW-D SKM-S transmitters and the EW-D charging system.

Why Professionals Use This Type of Product

• Accurate remaining-capacity monitoring prevents unexpected shutdowns
• Single battery type covers both handheld and bodypack EW-D transmitters
• Lithium-ion chemistry provides consistent power throughout discharge
• Rechargeable design eliminates ongoing disposable battery costs

Additional Compatibility Information

The Sennheiser BA 70 is a lithium-ion rechargeable battery pack for EW-D SK bodypack and EW-D SKM-S handheld transmitters in the Sennheiser Evolution Wireless Digital platform.