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Small black plastic camera battery coupler with cable and connector

Tether Tools

Tether Tools Case Relay Camera Coupler CRSFW50

SKU CH-AQG0-RXRRM

Provides continuous camera power via USB when paired with the Case Relay system

  • Continuous power for long shoots using a 5V USB source
  • Works with Canon, Nikon, Sony, Panasonic, Fuji and Olympus bodies
  • Eliminates the need to swap or recharge proprietary batteries
  • Connects directly to the camera battery port for simple setup
  • Ideal for time-lapse, video and extended LiveView sessions

Tether Tools CRSFW50 Coupler

The Tether Tools Case Relay Camera Coupler CRSFW50 replaces a standard Sony NP-FW50 battery to deliver continuous power. It is built for photographers and videographers who need uninterrupted operation during long sessions. The coupler supports Canon, Nikon, Sony, Panasonic, Fuji and Olympus camera bodies that accept the NP-FW50 form factor. It draws energy from an external 5V USB source instead of an internal cell.

Requires Case Relay CPS System

The coupler cannot function alone; it must connect to the separate Case Relay Camera Power System (CPS). That CPS unit then links to any standard 5V USB battery pack or AC adapter. This arrangement removes the need to carry and recharge multiple proprietary camera batteries. It frees the shooter from monitoring internal battery levels during time-lapse, video production or extended LiveView use.

Continuous Power Within USB Limits

The system provides unlimited run-time as long as the external 5V USB supply remains active. It comfortably handles multi-hour time-lapse sequences, all-day photo booths and power-hungry video recording. The hard limit is the capacity and current rating of the chosen USB power bank or wall adapter. If the external source cannot sustain the camera's peak draw, the coupler will not compensate.

Highlights

  • Continuous power for long shoots using a 5V USB source
  • Works with Canon, Nikon, Sony, Panasonic, Fuji and Olympus bodies
  • Eliminates the need to swap or recharge proprietary batteries
  • Connects directly to the camera battery port for simple setup
  • Ideal for time-lapse, video and extended LiveView sessions

Specifications

No published specifications for this item yet.

Questions about this item

How long can the CRSFW50 coupler run continuously before it overheats?

The coupler itself has no internal battery or thermal limit; it passes 5 V USB power from the Case Relay CPS, so sustained use is limited only by the external pack or wall supply you connect.

Does the CRSFW50 generate noticeable heat or fan noise during all-day time-lapse shoots?

The coupler is a passive adapter with no fan or active electronics, so it adds no audible noise and negligible heat beyond what the camera body already produces.

What separate hardware must I already own for the CRSFW50 to power my Sony NP-FW50 camera?

You need the Case Relay Camera Power System (CPS) and a standard 5 V USB battery pack or AC adapter; the coupler alone cannot supply power.

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