Core SWX V-Mount and Gold Mount Battery Plates for Sony FX9

Core SWX released V-mount and Gold mount (3-stud) battery plates for the Sony FX9. They provide steady 19.5V DC output with LED power indicator. Additionally, there are two D-taps on top and XLR input on the side. They mount directly on the FX9 body with two points of contact. The battery plates can be pre-ordered now for around $499 and they should start shipping in February.

Core SWX battery plates for Sony FX9. Image credit: cinema5D

In December 2019 I wrote about the new Core SWX battery plates for Sony FX9 full-frame cinema camera (my article can be found here). At the BSC Expo 2020 show in London, Nino met up with Ross from Core SWX to hear more about these new battery plates. What did we learn about them?

Core SWX Battery Plates for Sony FX9

The plates are all-aluminium CNC machined products. They come in both V-Mount and Gold Mount versions and are designed to seamlessly integrate with the camera. They leverage two points of contact with the camera, to provide a sturdy connection. There are two screws on top and a rail guide, which provides another point of contact and prevents any kind of torque.

Core SWX battery plates for Sony FX9. Image credit: cinema5D

The plates have two D-taps on the front and XLR input on the side. This XLR input can provide hot-swap function for the batteries.

LED Power Indicator

As Ross told us, the unique feature of the Core SWX battery plates, is the LED power indicator on the side. Sony FX9 requires a steady 19.5V voltage to run properly from a DC input connector. Core SWX has a boost converter in the battery plate to keep the 19.5V steady regardless of the level of the battery pack.

Core SWX battery plates for Sony FX9. Image credit: cinema5D

The LED indicator starts blinking red once the battery pack gets below 10% capacity (or below 13V if it is not a smart battery pack). That is a useful signal for the camera operator or assistant to change the battery pack so that the camera does not shut down in the middle of a take.

Price and Availability

Core SWX battery plates for the Sony FX9 are priced at $499. They can be pre-ordered now already. Ross told us they should be able to start shipping enough battery plates during February 2020.

What do you think about these battery plates from Core SWX? Do you use the Sony FX9 for your work or do you plan to invest in it? Let us know in the comments underneath the article.

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Keith Mullin

Already shipping in the US. We’ve had ours since very early January. Love the fit and design. You can also fit a BPU-30 in the camera and then mount the plate so you can hot swap your big batts, and so that you don’t unexpectedly run out of battery, since the camera will not give you a read out of how much power is left in the battery on the plate.

Nino Leitner
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Good point. Realized that after the interview – I also asked Ross to include thumb screws to mount it for that reason, because you’ll have to take it off to replace and charge the BPU-30.

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Keith Mullin

That would be a great addition. I might just go down to my local specialty fastener store and see if I can find something that would work.

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