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Pegasus Battery Coupler - Sony Mirrorless
Pegasus Battery Coupler - Sony Mirrorless

Pegasus Battery Coupler - Sony Mirrorless

by Pegasus Astro
SKU PEG-COUPL-SONY
$22.00 USD - $34.00 USD
$22.00 USD
$22.00 USD - $34.00 USD
$22.00 USD
Price Match Policy!
  • Replaces standard Sony NP-FW50 or NP-FZ100 camera batteries for continuous power
  • Runs from the DSLR output of the DSLR Buddy or Pocket Powerbox
  • Terminates in a standard DC 2.1 mm plug
  • Adjustable outputs of UPBv2 and Pocket Powerbox Advance must be set to 8 V only
  • Eliminates battery swaps during long astrophotography sessions
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Pegasus Battery Coupler - Sony Mirrorless

    The Pegasus Battery Coupler for Sony Mirrorless cameras replaces your camera's standard battery, so your camera runs from your Pegasus powerbox all night instead of from its battery. This dummy battery DC coupler terminates in a DC 2.1 mm plug, which ends battery swaps in the dark halfway through a sequence. Two models are available, supporting either NP-FW50 or NP-FZ100 battery types for a wide range of Sony Alpha cameras.

    8V of Uninterrupted Power for All-Night Sony Imaging

    Astrophotography with a mirrorless camera often means dealing with small batteries that can't last through a full night of imaging, especially in the cold. The Pegasus Battery Coupler solves this by replacing the internal battery with a direct, regulated power feed from your main telescope power supply. Pegasus describes the result as a more stable and consistent power source that lets the camera run all day and night long.

    PEG-COUPL-SONY vs. PEG-COUPL-FZ100: Choosing the Right Model

    Selecting the correct coupler is critical for compatibility with your camera. Pegasus Astro offers two distinct models for the Sony mirrorless line, each corresponding to a specific battery type. Verify your camera's battery model before ordering to ensure a proper fit and safe operation.

    • PEG-COUPL-SONY (Pegasus PW20, NP-FW50 type): Sony A7, A7R, A7S, A7II, A7RII and A7SII.
    • PEG-COUPL-FZ100 (NP-FZ100 type): Sony A7III, A9, A7RIII, A7SIII and other cameras powered by the NP-FZ100 battery.

    Connecting to Pegasus Powerboxes at a Strict 8V

    The DC 2.1 mm plug connects directly to the dedicated "DSLR Out" port on a DSLR Buddy or Pocket Powerbox. You can also use the adjustable output of an Ultimate Powerbox v2 or Pocket Powerbox Advance, but only after setting it to 8 V.

    Warning: Supplying a voltage higher than 8 V will cause permanent damage to your camera. Always double-check your powerbox settings before connecting the coupler. The cable is designed to be routed through the small rubber port on your camera's battery door, allowing the door to close securely.

  • What is the purpose of the Pegasus Battery Coupler for my Sony A7III?

    The Pegasus Battery Coupler acts as a "dummy battery," replacing your standard Sony NP-FZ100 battery. It allows you to power your A7III directly from a Pegasus powerbox for an entire night, eliminating the need to swap batteries and preventing your camera from shutting down during a long exposure sequence.

    Which Pegasus Coupler model do I need for a Sony A7RII camera?

    For the Sony A7RII, you need the PEG-COUPL-SONY model. This coupler is designed for cameras that use the NP-FW50 type battery, which includes the A7RII, A7, A7S, and their "II" generation counterparts.

    Can I power the Pegasus Sony Coupler from my Ultimate Powerbox v2?

    Yes, with care. You must use one of the adjustable outputs on the Ultimate Powerbox v2 and manually configure the voltage to exactly 8 V. Setting the voltage any higher will damage your camera. The output Pegasus designed the couplers for is the DSLR Out of the DSLR Buddy or Pocket Powerbox.

    What happens if I set the adjustable voltage output higher than 8V for the Pegasus Coupler?

    You risk damaging your camera. Pegasus warns that a higher voltage will damage it, so set the adjustable output to 8 V and check it before you plug in the coupler.

    My camera shows a message when it starts with the coupler. Is something wrong?

    No. Pegasus notes that some cameras show a message at startup when running from a coupler. Select OK and the camera operates as usual.

    How do I set up my Pocket Powerbox Advance to safely power a Sony A9 with the Pegasus FZ100 coupler?

    To power a Sony A9, you need the PEG-COUPL-FZ100 coupler. Connect it to one of the adjustable outputs on the Pocket Powerbox Advance. In the Pegasus software, set that output to 8 V first, then plug in the coupler. A higher voltage will damage the camera.

  • Product Type Dummy Battery DC Coupler
    Models PEG-COUPL-SONY (NP-FW50 type), PEG-COUPL-FZ100 (NP-FZ100 type)
    Compatible NP-FW50 Cameras Sony A7, A7R, A7S, A7II, A7RII, A7SII
    Compatible NP-FZ100 Cameras Sony A7III, A9, A7RIII, A7SIII
    Output Connector DC 2.1 mm plug
    Required Input 8 V DC from Pegasus DSLR Buddy, Pocket Powerbox, or adjustable output set to 8V only.

    • Sony Battery Coupler (NP-FW50 or NP-FZ100)

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  • Pegasus Astro 2-Year Warranty