SMALLRIG D-TAP for Sony NP-FZ100 Dummy Battery, Power Cable for Sony A7 III, A7 IV, A7S III, A7R III, A7R IV, A7R V, A7C, A7C II, A7CR, A1, A9, A9 II, A6600, A6700, FX3, FX30, ZV-E1 Cameras - 4253B

Recommended for Sony A7 IV with Vmount battery.

I have been a fan of smallrig products with years and yet again this doesn't disappoint. Well made, good price, no complaints.

An exstramly usfull item. Perfect if you need more power than a standard NP-FZ100 can produce.Plug this into your D-Tap battery and off you go!Great Cable, perfect for when I'm out and about with no acsess to the mains.5*****

The media could not be loaded. This is a smart little adaptor if like me you often do longer shoots This saves replacing batteries and allows you to have big batteries with d-tap outputs to run your camera for much longer, I use these on my Sony a7 iv's and they are quality adaptors with nice coiled leads and absolutely zero compatibility issues, all in all, a very good bit of kit.

£50 at time of reviewFor time lapse photography I use a USB battery pack connected to the camera via the USB port, which is OK, but as I have an automated slider, I’ve always been wary about the USB cable becoming loose when the camera moves along the slider… this is way more secure and worked perfectly, plus my D-Tap battery pack can take two NP-F970 batteries that will last a week or shooting!Hope my review was helpful

Broke after 1 week

You can't just use it as it comes. You need to have an extra power source, I can't seem to find one that allows it to go straight into a wall socket.