Here are the details for the Tether Tools Relay Camera Coupler – Canon Battery LP‑E5 (Model CRCE5), plus its advantages, limitations, and tips.
Product Overview: CRCE5 (Relay Camera Coupler for LP‑E5)
The CRCE5 is a dummy battery (coupler) that fits into the battery compartment of Canon cameras that normally use the LP‑E5 battery. It is part of the Tether Tools Relay / Case Relay Power System, which enables continuous external power (via USB power banks, wall adapters, or AC power sources) to the camera instead of relying on the internal LP‑E5 battery. The coupler itself does not contain any battery — it only acts as a conduit for external power.
Key Specs & Features
| Spec | Details |
|---|---|
| Model | CRCE5 Tether Tools+2B&H Photo Video+2 |
| Battery type replaced | Canon LP‑E5 Tether Tools+2Polyline+2 |
| Compatible camera models | Canon EOS Rebel T1i / 500D, 450D / XSi / EOS Kiss X2, EOS 1000D / Rebel XS, etc. Tether Tools+2B&H Photo Video+2 |
| Cable length (from coupler to input) | ~ 10 inches (25.4 cm) built‑in cable B&H Photo Video+1 |
| Total run with Relay system cable | When connected with the Relay external power cable, total cable run is ~ 50 inches (≈ 127 cm) Tether Tools+1 |
| Powering requirement | Requires external power source (USB‑powered, 5 V), plus the Case Relay power system. Tether Tools+2B&H Photo Video+2 |
What It Enables / Benefits
Continuous shooting: Great for timelapse, video, or long Live View sessions where battery changes are inconvenient.
Hot‑swap external power: Because the Relay system includes an internal buffer battery (≈ 1,200 mAh), you can change external power sources without interrupting the camera’s operation. B&H Photo Video+2Tether Tools+2
Cost savings: Rather than buying many LP‑E5 batteries, you use more standard external USB power banks or adapters.
Flexibility / compatibility: Useful for shoots where you want reliable power and don’t want to worry about battery drain. Also simpler in varied locations (studio / outdoors) as USB power sources are more universal.
Things to Be Careful About / Limitations
| Limitation | Implication |
|---|---|
| No internal battery in the coupler | If the external power and buffer are not functioning, the camera will lose power. The coupler only connects; power must come from the Relay or external source. Polyline+1 |
| Battery door closure | The camera’s battery door must be fully closed. The cable must exit via the rubber trapdoor if provided; failure to do so may affect fit or risk damage. B&H Photo Video+1 |
| Power demands under load | In modes such as video or continuous Live View, the camera draws more power. The external power source must provide enough current; poor or under‑powered sources may cause instability. |
| Cable strain | The cable from the coupler is a weak point. Improper routing, sharp bends, or tugging can damage the cable or connector. Supporting the cable, using proper clamps or strain relief helps. |
| Compatibility check required | Although many cameras using LP‑E5 are supported, always check specifically your camera model to make sure things align (battery chamber design, firmware, etc.). Tether Tools+1 |
If you like, I can prepare a polished product description (for your website/catalog) for this coupler. Would you also want me to compare it with some similar couplers (for LP‑E6, etc.) so you can see trade‑offs?