Here are the details & a full overview for the Tether Tools Relay Camera Coupler CRPBLE9 (for Panasonic Lumix cameras using the DMWâBLG10 battery):
What It Is
The CRPBLE9 is a âdummyâ battery (coupler) that fits into the battery slot in place of the Panasonic DMWâBLG10 battery. It allows the camera to be powered continuously via external sources by interfacing with the Tether Tools Case/Onsite Relay Camera Power System (CPS). The coupler itself doesnât hold any power; it facilitates power delivery from an external 5âŻV supply or battery. Tether Tools+3Tether Tools+3B&H Photo Video+3
Key Specifications
| Spec | Detail |
|---|---|
| Model / SKU | CRPBLE9 B&H Photo Video+1 |
| Battery it Replaces | Panasonic DMWâBLG10 B&H Photo Video+1 |
| Compatible Cameras | Lumix models that use BLG10: DMCâF3K, GF3, GF5, GF6, S6K, GX7, and others. B&H Photo Video+1 |
| Cable Length (Coupler side) | ~âŻ10âł (ââŻ25.4 cm) builtâin cable from the coupler to the barrel/coax input jack. B&H Photo Video+2Polyline Corp+2 |
| Total Cable Run with Relay System | ~âŻ50âł (ââŻ127 cm) when combined with the Relay extension/power cable. Tether Tools+2Dodd Camera+2 |
| Connector / Input Type | Barrel/coaxial female input jack for external power connection via Relay CPS. B&H Photo Video+1 |
| Warranty | Covered under Tether Tools limited 90âday warranty (standard for Relay couplers) Tether Tools+1 |
UseâCases & Benefits
Continuous / long duration use: Great for workflows that require long LiveView sessions, video recording, timelapse, or studio work where battery swapping is inconvenient. Filmtools+1
Hotâswap external power: Because the Relay CPS includes an internal buffer battery, you can change external power source (power bank, AC adapter, etc.) without shutting the camera off. Tether Tools+1
Cost and convenience: Reduces need for carrying multiple BLG10 batteries; external 5V power sources are more accessible. Polyline Corp+1
Crossâsystem flexibility: If you use multiple cameras from different brands, having this coupler lets the same power system be used across those by swapping couplers. Polyline Corp

Limitations / Things to Keep in Mind
The coupler itself doesnât store energy; if both external power and the internal buffer run out, the camera will power off. Tether Tools+1
The battery door must be able to close fully, and the cable must route through the rubber / trap door (if present) so thereâs no strain or forced bending. Forcing the door closed incorrectly can damage the camera or cable. Tether Tools+1
Power draw in modes like video or highâbrightness LiveView is higher; ensure you use a good quality external power source and cables to avoid voltage drops or instability.
Doubleâcheck compatibility: Just because a camera uses the BLG10 battery doesnât always guarantee perfect fit/use; battery slot designs or doors may vary slightly. From sources, GX85, G100 etc. are confirmed. B&H Photo Video+1

