Tether Tools Case Relay Camera Power System (CRUPS110)
What It Is
The Case Relay Camera Power System is an uninterruptible power supply (UPS) designed for DSLR and mirrorless cameras. It allows continuous power delivery via standard USB 5V power sources, plus an internal battery, so you can hot‑swap external power without shutting off the camera. It replaces the camera’s battery via a dummy battery (called the Relay Camera Coupler), offering shooting continuity in demanding workflows.
Key Features
Feature | Description |
---|---|
External USB power + Wall Power | You can power your camera using any standard USB‑powered source (power bank / wall adapter / generator) that provides 5V. Tether Tools+2Tether Tools+2 |
Internal UPS battery | Built‑in lithium battery (~1,200 mAh at 7.4 V) acts as a buffer so you can swap out external power sources without shutting off the camera. Tanotis+2K&M Camera+2 |
Hot‑swapping capability | Because of the internal battery, external power can be changed mid‑shoot without interruption. Tether Tools+2tecart.com.au+2 |
LED indicator | Shows battery status (e.g. green → yellow → red) so that you know when to swap power banks or charge. Tanotis+1 |
Wide compatibility | Works with many major camera brands (Canon, Nikon, Sony, Fujifilm, Olympus, Panasonic, Blackmagic etc.) via use of a dummy battery coupler. tecart.com.au+2Tether Tools+2 |
Technical Specifications
Spec | Value |
---|---|
Internal battery capacity | ~ 1,200 mAh, 7.4V lithium UPS battery Tanotis+2Tether Tools+2 |
Input | 5V DC (USB Type‑A), ~2A tecart.com.au+2Tanotis+2 |
Output | ~ 8V DC, up to ~2A (max) via the Relay Camera Coupler + adapter kit tecart.com.au+2Tanotis+2 |
Model number | CRUPS110 PROCAM Photo & Video Gear+2K&M Camera+2 |
Required accessory | Relay Camera Coupler (sold separately) for your specific camera’s battery type. Tether Tools+2Tether Tools+2 |
Advantages & Typical Use‑Cases
Extended shooting sessions: Ideal for long video recordings, timelapse, star trails, or night‑photography where battery life is a limiting factor.
Live View or video‑heavy workflows: Cameras consume more power; this system helps maintain operation without having to frequently change out batteries.
Event photography, photo booths, or field shoots: Situations where mobility or continuous operation is important.
Hot‑swap convenience: The internal battery allows swapping external power sources (like USB power banks) without shutting off the camera. This minimizes disruptions.
Limitations & Considerations
The output voltage may vary depending on the camera/coupler; ensure your camera’s power draw is within the system’s output capability (≈2A). Exceeding what the camera needs may cause thermal or performance issues.
The internal battery is a buffer, not a long‑run battery: it’s meant to bridge transitions; for truly long shoots, you’ll still rely mostly on external power.
Need to use the correct dummy battery (coupler) and ensure the battery door on the camera closes properly over the coupler so it’s safely sealed. Tether Tools+1
Cable/shell lengths and routing need care so that the system doesn’t pull or stress the camera’s battery compartment or external connectors.

Summary
The Case Relay Camera Power System is a smart solution for photographers and videographers who need continuous, reliable power without being tied to proprietary camera batteries alone. It combines external USB power with an internal UPS battery and the appropriate dummy battery coupler to create a hot‑swappable, stable power source. For long shoots, video work, live‑view usage, or any scenario where power continuity is critical, this system helps avoid downtime, reduces battery swap hassle, and offers flexibility in power source choices.
If you like, I can write a version of this that’s ready for a product page (A+ content), or also compare this with other continuous power systems so you can see how it stacks up.