The Battery Slide Pro V-Mount for Sony FX9 from Wooden Camera attaches to the rear of the camera and supports a V-mount battery while leaving access to the camera's standard battery compartment. With the camera's BP-U35 battery in place, hot swapping is supported.
The Battery Slide Pro also features three D-Tap ports for powering accessories. Additionally, it uses a digital fuse that monitors the D-Tap ports and disables them if they exceed the set current for accessories while leaving the camera running. Once the load has been reduced by removing accessories or otherwise, a reset button can be pressed to enable accessory power again.
The Battery Slide Pro attaches to the back of the camera via a top plate, using screws that come installed in the plate. (It attaches where the optional Sony XDCA-FX9 Extension Unit would normally attach.) It connects to the camera using an integrated barrel connector cable.
Once the Battery Slide Pro is attached, the battery plate position can be adjusted by loosening a lever and sliding the plate. The Battery Slide Pro closely matches the rear profile of the camera to allow it to efficiently fit in a camera case.