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Lectrosonics

Lectrosonics FC ISO9VOLT Battery Eliminator

$99.95

This battery eliminator isolates the power source from the device being powered. This is particularly significant when using a single source power distribution system (such as the popular BDS) to power a rig that includes a transmitter. In the past powering transmitters along with other audio devices required very careful attention to grounds and shielding of the audio interconnects to reduce the chances of unwanted noise. In an ENG bag or cart, the ISO9VOLT battery eliminator is a simple and effective solution to power ground loop concerns. 

View Product Features
  • Eliminates need for 9V batteries: Powers transmitters from external power source.
  • Input voltage range: Accepts 10 to 18 VDC input.
  • Regulated 9 VDC output: Provides stable power to the transmitter.
  • Breaks audio ground loops: Prevents high frequency noise in audio.
  • Fused, reverse polarity protection: Ensures safe, reliable operation.
In stock
12 in stock

Scroll below to see our current inventory for this item.

In-Stock Inventory

  •
    Used

    C2041-920

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-921

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-922

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-923

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-924

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-926

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-927

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-928

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-929

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-930

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-931

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product
  • Used

    C2041-932

    Lectrosonics FC ISO9VOLT Battery Eliminator

    Cosmetic Rating

    Fair

    "Fair Condition" gear exhibits noticeable signs of use, including moderate wear, scratches, and minor cosmetic damage. While some non-essential parts may be missing, these items are fully functional for key purposes. A great choice for those prioritizing functionality over appearance.
    $99.95
    View Product

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About the Lectrosonics FC ISO9VOLT Battery Eliminator

The Lectrosonics FC ISO9VOLT is a professional battery eliminator designed to provide clean, regulated, and isolated DC power to Lectrosonics wireless microphone transmitters from an external source. This device allows users to bypass disposable or rechargeable 9-volt batteries by drawing power from a standard 12-14 volt DC supply, such as those provided by camera battery plates or portable power distribution boxes. Its primary function is to ensure uninterrupted operation during long recording sessions, live broadcasts, or studio work, eliminating the risk of a transmitter dying mid-take due to battery failure. The "ISO" in its name signifies its key feature: isolated power conversion, which prevents ground loops and hum that can be introduced when connecting audio equipment to shared power sources, thereby preserving the pristine audio quality Lectrosonics systems are known for.

The unit is engineered for reliability and ease of integration into professional production workflows. It typically features a locking connector that mates securely with the transmitter's DC input port, a robust cable, and a standard 2.1mm x 5.5mm DC output plug for connecting to the power source. The internal circuitry precisely regulates and filters the input voltage, delivering a consistent and noise-free 9 volts to the transmitter, regardless of fluctuations in the source voltage. This stable power not only enhances audio performance but also can contribute to more consistent RF output from the transmitter. Its compact and rugged build makes it suitable for use on camera rigs, in sound bags, or as part of a permanent installation.

For sound mixers in film, television, and broadcast, the Lectrosonics FC ISO9VOLT is an essential accessory for mission-critical applications. It is commonly used when a transmitter is mounted on a camera (for director or camera operator commentary), integrated into a hard-wired IFB or talkback system, or used for long-duration events like theatrical performances or all-day conferences. By providing a continuous and clean power feed, it removes the logistical burden and cost of battery management, increases operational reliability, and allows the audio professional to focus entirely on capturing perfect sound without power-related interruptions.

Key Features

  • Eliminates need for 9V batteries: Powers transmitters from external power source.
  • Input voltage range: Accepts 10 to 18 VDC input.
  • Regulated 9 VDC output: Provides stable power to the transmitter.
  • Breaks audio ground loops: Prevents high frequency noise in audio.
  • Fused, reverse polarity protection: Ensures safe, reliable operation.

Lectrosonics FC ISO9VOLT Battery Eliminator Specs

Device Function
Type
Battery Eliminator / External Power Supply
Output Voltage
9V DC Regulated
Purpose
Powers Lectrosonics Transmitters
Power Specifications
Input Voltage Range
12-14V DC
Isolation
Full Ground Isolation
Regulation
Precise Voltage Regulation
Connectors and Cable
Output Connector
Lectrosonics Locking DC Plug
Input Connector
2.1mm x 5.5mm DC Plug (Standard)
Cable
Coiled or Straight, Durable
Physical and Compatibility
Compatibility
Specific Lectrosonics Transmitter Models
Housing
Metal or Durable Plastic
Dimensions
Compact
Performance and Use
Audio Performance
Prevents Ground Loop Hum
Use Case
Camera Mount, Studio, Long-Duration Events
Mounting
Can be Secured with Tape or Hook-and-Loop

Key Features

  • Eliminates need for 9V batteries: Powers transmitters from external power source.
  • Input voltage range: Accepts 10 to 18 VDC input.
  • Regulated 9 VDC output: Provides stable power to the transmitter.
  • Breaks audio ground loops: Prevents high frequency noise in audio.
  • Fused, reverse polarity protection: Ensures safe, reliable operation.
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