The Sennheiser BA 70 is a high-performance rechargeable lithium-ion battery designed specifically for the Evolution Wireless Digital (EW-D) system. It provides long operating time, stable power delivery, and fast charging when used with compatible Sennheiser charging stations. Ideal for professional audio, corporate AV, education, broadcast, rental fleets, and live production environments where reliable wireless performance is essential.
Key Features
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Rechargeable lithium-ion battery pack
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Designed for Sennheiser EW-D bodypack and handheld transmitters
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Provides consistent power for digital wireless transmission
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Long run time with minimal self-discharge
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Quick-charging via dedicated Sennheiser chargers
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Durable and lightweight build for daily professional use
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Helps reduce battery waste compared to AA disposables
Technical Specifications
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Battery Type: Lithium-ion
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Voltage: 3.6 V
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Capacity: 2200 mAh
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Approximate Runtime: Up to 12 hours (varies by transmitter and RF settings)
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Charging Method: Compatible with Sennheiser L 70 USB and other EW-D charging systems
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Compatible With: EW-D bodypack transmitters, EW-D handheld transmitters using the BA 70 battery system
