The Relay Camera Coupler works in tandem with the Case Relay Camera Power System (sold separately) to provide uninterrupted power to your EOS camera.
Simply insert the Relay Camera Coupler into your EOS camera's battery port, attach to the Case Relay and power your camera with any 5V external battery pack or wall outlet.
The Relay Camera Coupler and Case Relay ensure that you'll never run out of power when you need it most.
Five varieties are available to suit your model of camera:
400 for EOS D30, D60, 10D, 20D, 30D, 40D, 50D, 5D
E10 for EOS 1100D, 1200D, T3, T5
E5 for EOS 450D, 500D, 1000D, T1i, XS, XSi
E6 for EOS 5D Mark II, 5D Mark III, 6D, 7D, 60D, 7D Mark II, 70D
E8 for EOS 550D, 600D, 650D, 700D