Here’s a detailed professional specification & overview for the Tether Tools Case Relay Camera Coupler “CRBLN‑1” for Olympus cameras using the BLN‑1 battery, including compatibility, strengths, limitations, and usage tips.
Tether Tools Relay Camera Coupler – Olympus BLN‑1 (CRBLN‑1)
What It Is
The CRBLN‑1 is a dummy battery / camera‑coupler designed to replace the Olympus BLN‑1 battery in compatible Olympus/OM‑D / PEN camera bodies. When used as part of the Tether Tools Case Relay Camera Power System, it allows the camera to receive continuous external power (via USB power bank or AC adapter) rather than relying solely on the BLN‑1 battery. This is helpful for long shoots, timelapse, video, LiveView, or any workflow where battery swaps are tedious or impossible.
Key Features & Specifications
| Spec | Details |
|---|---|
| Model / SKU | CRBLN‑1 (Relay Camera Coupler for Olympus BLN‑1) Studio Depot+2Design Info+2 |
| Replaces | Olympus Battery BLN‑1 Design Info+2Tether Tools+2 |
| Compatible Cameras | OM‑D E‑M1, OM‑D E‑M1X, OM‑D E‑M5 Mark II, OM‑D E‑M5, PEN E‑P5, PEN‑F Design Info+2Fotograf Merkezi+2 |
| Coupler Cable Length | ~ 10 inches / ≈ 25.4 cm from the dummy battery to its barrel/coax connector Studio Depot+1 |
| Power System Requirement | Requires the Case Relay Camera Power System (sold separately). The coupler does not contain its own battery or store power. Studio Depot+1 |
Benefits / What It Enables
Continuous Power: Ideal for extended use—timelapse, long LiveView or video sessions—without needing to swap out BLN‑1 batteries. Studio Depot+2Camera Electronic+2
Hot‑Swap External Source: Since the Case Relay system includes an internal buffer (backup) battery, external power sources (such as power banks) can be swapped out without interrupting camera operation. Camera Electronic+1
Cost & Flexibility: Lets you use more universally available 5V power sources (USB power banks or AC adapters) instead of carrying many BLN‑1 batteries. Studio Depot+1
Cross‑System Compatibility: Useful for multi‑camera workflows—if you have different couplers, you can swap them (dummy batteries) so one power system can serve several camera brands or models. Design Info+1
Limitations & Things to Check
No On‑Board Battery in the Coupler: The CRBLN‑1 itself does not store power. If the external power source AND the Case Relay buffer are depleted, the camera will shut off. Camera Electronic+1
Battery Door / Cable Routing: The camera’s battery door must be able to close fully; the cable must exit via the rubber trapdoor or a dedicated cable port. If not properly routed, the door might not close, leading to mechanical stress or possible damage. Studio Depot+1
External Power & Cable Quality: Sufficient current and clean voltage are needed—LiveView or video modes draw more power; poor quality cables or weak power banks can lead to instability or drops.
Compatibility Checking is Essential: Even if a camera uses a BLN‑1 battery, construction or door design (especially on newer or special models) may vary. Always verify if your exact camera model is supported with this coupler. Design Info+1
Usage Tips
Test prior to critical use: Set up your camera + coupler + Relay system in the exact configuration you'll use in the field to verify that everything works (battery bay closure, no tension on cable, etc.).
Use a high‑quality USB power source that can supply generous current—ideally ≥ 2A at 5V for high draw modes.
Support the cable: Use clamps, cable ties or other strain relief so the connector and battery door aren’t stressed.
Monitor heat: Extended LiveView / video can generate heat; ensure preventive measures (good airflow, moderate ambient temperature).
Carry a spare: Dummy batteries and couplers are simpler to replace than batteries failing mid‑shoot, especially for power‑critical work.