This is a guide on how to safely power your Sony FX3 or Sony A7SIII using a USB-PD power supply unit. This video will walk you through the correct units to buy as well as which USB-C cable I recommend for these two cameras. This guide is based on the official information provided by Sony in their instruction manual and after emailing them for confirmation.

While you can buy a dummy battery for the Sony FX3 or Sony A7C, the door will always be ajar. Dummy batteries can also cause the camera to malfunction if the voltage isn’t properly regulated. This is the easiest and safest way to power the Sony FX3 via AC power.

The USB-PD power supplies mentioned in this video allow you to use the camera without the internal battery draining to flat. Even if your battery has only 1% power, the USB-PD will let you use the camera like it’s plugged into a wall socket/AC power. This is a far safer option than using an unregulated dummy battery.

Relevant Links
? eBay Power Supply Brick – (USA)
? B&H Alternative USB-PD Power Brick –
? Fasgear USB-C Braided Cable –
? B&H USB-C Cable Alternative –

Table of Contents
0:00 – About
0:30 – No Dummy Battery Door
1:06 – How USB-PD Works for Sony FX3
2:22 – Fasgear USB-C Cable
3:14 – Final thoughts

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