Erik Naso
Veteran
Here is a link to the F&V site
http://www.fvlighting.com/3-stud-battery-system-basic.html
The F&V Lighting 3-Stud Battery System accepts all 3-stud batteries (Gold Mount). It mounts onto standard 15mm rods and features four (4) female D-tap connections. Whether you need to power an on-camera light, a monitor, or an onboard accessory, this 3-Stud Battery System will help feed your accessories power for an extended period of time. The battery system is also capable of tilting up and down, allowing for a configuration that meets the needs of your camera set-up.
Used this with a GH4 and YAGH on one project. Don't have a use for it anymore. Very clean and well taken care of. Retails for $225
$190 with free CONUS shipping if you use Paypal friends and family payment.