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Sennheiser BA 70

Rechargeable Battery for EW-D Transmitters

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Sennheiser BA 70 | Rechargeable Battery for EW-D Transmitters | 12-Hour Lithium-Ion Power

Rechargeable Wireless Transmitter Battery

Sennheiser BA 70 is a high-capacity lithium-ion battery engineered for use with Sennheiser EW-D SK bodypack and EW-D SKM-S handheld transmitters. Designed to replace AA batteries, it provides extended runtime and consistent performance for demanding wireless audio applications.

Sennheiser BA 70 Competitive Differences

  • Delivers up to 12 hours of operation per charge
  • Compatible with L70 USB dual-charger (sold separately)

Sennheiser BA 70 Description

The Sennheiser BA 70 is a reliable power solution for users of the EW-D series wireless systems. With a 1720mAh capacity and nominal 3.8V output, this rechargeable lithium-ion battery ensures consistent power for extended sessions, whether on stage or in the studio. Built to handle the rigors of professional use, it supports a wide range of operating temperatures and humidity levels, making it suitable for indoor and outdoor environments. The BA 70 charges fully in approximately three hours using the optional L70 USB charger, ensuring fast turnaround between uses. Lightweight and compact, it fits seamlessly into EW-D transmitters without adding bulk, replacing the need for disposable AA batteries and helping reduce waste. Whether you're a touring artist, live sound engineer, or AV technician, the BA 70 is an essential accessory for reliable wireless performance.

Model Features

  • Rechargeable lithium-ion battery
  • Designed for EW-D SK and SKM-S transmitters
  • Provides up to 12 hours of runtime
  • Fast 3-hour charge time
  • Compact and lightweight

Model Specifications

  • Type: Lithium-Ion
  • Capacity: 1720 mAh
  • Voltage: 3.8 V nominal, 4.35 V max charging
  • Charging Time: 3 hours at room temperature
  • Temperature Range: Charging: 32–131°F (0–55°C), Discharging: 14–131°F (10–55°C), Storage: 14–113°F (-10–45°C)
  • Humidity (Relative): Charging/Discharging: 25–95% (non-condensing), Storage: 30–70% (non-condensing)
  • Dimensions: 2.1 x 1.2 x 0.6 in (54 x 30 x 15 mm)
  • Weight: 1.2 oz (33 g)

What's In The Box

  • Sennheiser BA 70 battery

SENNHEISSER BA70 (Sennheiser BA-70)

Research with AI

Battery Life up to 12 hours hours
Power Rating 1720 mAh mAh
Voltage Range 3.8 V nominal, 4.35 V max charging V

Brand Sennheiser
Name Sennheiser BA 70 Rechargeable Battery for EW-D Transmitters

Dimensions 2.1 x 1.2 x 0.6 in (54 x 30 x 15 mm) inches
Weight 1.2 oz (33 g) g

Warranty Length Not specified years

Why to Invest?

The Sennheiser BA 70 battery offers extended runtime and reliable power for professional wireless transmitters, reducing the need for disposable batteries and supporting sustainable use. Its fast charging and compatibility with the L70 USB charger make it convenient for continuous use in demanding environments.

How it Works?

The BA 70 lithium-ion battery powers EW-D series transmitters by providing a stable 3.8 V output with a capacity of 1720 mAh. It charges fully in about three hours using the optional L70 USB charger and supports operation across a wide temperature and humidity range, ensuring consistent performance during extended wireless audio sessions.

What's Unique?

Designed specifically for Sennheiser EW-D SK and SKM-S transmitters, the BA 70 replaces disposable AA batteries with a rechargeable solution that delivers up to 12 hours of runtime. Its compact, lightweight design and robust environmental tolerance make it ideal for professional audio applications both indoors and outdoors.

Key Features

Rechargeable lithium-ion battery; Compatible with EW-D SK and SKM-S transmitters; Up to 12 hours runtime; Fast 3-hour charge time; Compact and lightweight design; Supports wide temperature and humidity ranges; Compatible with L70 USB dual-charger (sold separately).

Technical Specifications

Type: Lithium-Ion; Capacity: 1720 mAh; Voltage: 3.8 V nominal, 4.35 V max charging; Charging Time: 3 hours at room temperature; Temperature Range: Charging 32–131°F (0–55°C), Discharging 14–131°F (10–55°C), Storage 14–113°F (-10–45°C); Humidity: Charging/Discharging 25–95% non-condensing, Storage 30–70% non-condensing; Dimensions: 2.1 x 1.2 x 0.6 in (54 x 30 x 15 mm); Weight: 1.2 oz (33 g).

Included Accessories

Sennheiser BA 70 battery

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DJ & AUDIO > Mics & Headphones > Wireless Mic Components
UPC: 615104343290
Brand: Sennheiser
Sennheiser BA 70 | Rechargeable Battery for EW-D Transmitters | 12-Hour Lithium-Ion Power
Sennheiser BA 70 | Rechargeable Battery for EW-D T...
$66.99