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Tether Tools ONsite Relay C Camera Power System

BH #TEORC115 • MFR #ORC115
2 reviews
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Tether Tools ONsite Relay C Camera Power System
Key Features
  • External Power Adapter
  • Universally Compatible
  • Designed for Relay Camera Coupler
  • Can be Adapted for D-Tap Batteries
The ONsite Relay C Camera Power System from Tether Tools is a clever device that lets you power your camera continuously using any external source with an AC connection or USB battery.
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Tether Tools Relay Overview

The ONsite Relay C Camera Power System from Tether Tools is a clever device that lets you power your camera continuously using any external source with an AC connection or USB battery.

  • Ideal for time-lapse photography, astro-photography, or any photography that requires extended shooting time such as nature, fashion, landscape, architecture, and more.
  • Great fit for video production as you can swap the External Battery Bank, without having to stop shooting to change camera batteries.
  • Can be used with the NP-F platform to power any compatible device between 7 and 9v, like monitors, LED lights, video cameras, and recorders.
UPC: 818307015432

Tether Tools Relay Specs

Input
USB Type-C PD 12 V / 2.5 A
Output
8 VDC / 3A
Weight
10.5 oz / 299 g
Packaging Info
Package Weight
0.51 lb
Box Dimensions (LxWxH)
6.9 x 6.2 x 1.8"

Tether Tools Relay Reviews

missing dummy battery

By Ahmad
Rated 5 out of 5
Date: 2026-05-08

It does what it meant to do. However this device is useless if you don't have the dummy of the camera you want to use it with. NOT all cameras can used dummies so pay attention to what's available before you buy it. Time saver.

Works Great!

By KENNETH
Rated 5 out of 5
Date: 2025-05-05

Works great! Been using it for a while (almost daily) now and have not experienced any issues yet. When I'm not tethered to my computer I use it with the Tether Tools Relay Camera Coupler for FUJIFILM Cameras with NP-W235 Battery on my Fujifilm GFX 100s with a Anker power bank. It is great to shoot all day without having to stop and change the battery.

See any errors on this page?

What is the suggested extension cable for this? ...

What is the suggested extension cable for this? This cable is too short. I need extension cable for this to connect to adapter connected to power outlet.
Asked by: alexis gil
Very long USB cables tend to lose power, so to extend the reach of the Tether Tools ONsite Relay C Camera Power System, I recommend plugging the USB-C to AC adapter that you are using into a regular wall outlet extension cable, for example, this Watson AC Power Extension Cord (16 AWG, Black, 25'), BH # WAACE1625BU.
Answered by: Daniel C
Date published: 2025-08-29

Do I need to buy a Coupler to connect my EOS R5 ...

Do I need to buy a Coupler to connect my EOS R5 to the AC wall power? Or just can do it throughout the USB-C included?
Asked by: Osmany
No, the Tether Tools ONsite Relay C Camera Power System only work with a coupler. This is the coupler for the R5, https://bhpho.to/3GNG1xc .
Answered by: Rob K
Date published: 2021-12-15
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