Foldable V Mount Battery Plate for Sony FX3 A7 IV A7S III - Compact

In this review the SMALLRIG Foldable V Mount Battery Plate is assessed as a compact power solution for creators using Sony FX3, A7 IV and A7S III bodies as well as other similar mirrorless cameras. The bottom line: this is a travel-ready, tool-free V-mount plate that prioritizes portability and quick deployment over full accessory bundles. It excels where size, rotation for side-flip screens, and simple balance adjustments matter most, and it is best for shooters who need a lightweight V-mount workflow rather than a fully featured cage-mounted power system.

Key Features

• Ultra-compact design: The foldable structure collapses to about 3cm thick so it easily slips into backpacks or tight gear bags for travel shoots.
• Rotatable V-mount bracket: The bracket tilts 90 degrees downward to clear side-flip screens for instant access during run-and-gun operation.
• Tool-free adjustments: The plate uses a tool-free locking mechanism and a stretchable base so users can quickly achieve balance for handheld or tripod setups.
• Modular expandability: Bottom-mounted threading allows attachment of accessories such as desk mounts, Arca-Swiss adapters, or small table stands for different shooting scenarios.
• Lightweight all-in-one power: The single-piece foldable arm replaces bulky dual-tube systems to offer a low-cost expansion path for V-mount batteries on compact rigs.

Who It's For

This plate is aimed at mirrorless camera shooters with bodies less than 111mm thick, especially owners of Sony FX3, A7 IV, A7S III and similar Canon R5/R6 or Nikon Z8 users who want a portable V-mount power option. It is a good fit for travel filmmakers, event shooters and solo operators who need quick screen access and fast transitions between handheld and tripod work.

Those who need an included Arca-Swiss quick release, a mini V-mount plate, or a heavy-duty locking system integrated into a full camera cage should look elsewhere or consider a more feature-rich version, since this is the Lite Version and omits the quick release components in the packing list.

Pros & Cons

Pros

• Very compact and foldable for easy transport and storage.
• Rotatable bracket and tool-free adjustments speed up setup and maintain screen access.
• Bottom threading provides practical expandability for mounts and adapters.

Cons

• Does not include the Arca-Swiss quick release or mini V-mount plate, so extra purchases may be needed for some workflows.
• Some users report mixed experience with the locking mechanism's ease of tightening, so it may require attention during heavy use.

Specifications

Compatibility	Sony FX3, A7 IV, A7S III, Canon R5/R6, Panasonic S5/GH5, Nikon Z8
Camera thickness supported	Less than 111mm
Design	Foldable one-piece V-mount arm with 90 degree rotation
Adjustment	Tool-free locking mechanism and stretchable base for balance
Mounting options	Bottom-mounted threading for accessories and Arca/MFT adapters
Version	Lite Version (quick release and mini V-mount plate not included)

Our Verdict

The SMALLRIG Foldable V Mount Battery Plate Lite is a smart, travel-focused power accessory for mirrorless shooters who value portability and quick setup. It offers practical expandability and screen-clearing rotation at a modest price, though photographers wanting an Arca quick release or a heavier locking system will need to add parts or choose a different variant. Overall it delivers solid value for compact rigs.

Frequently Asked Questions

Does this plate include an Arca-Swiss quick release?
The Lite Version does not include the Arca-Swiss quick release or the mini V-mount plate in the packing list.

Will it fit my camera with a cage attached?
The plate is designed for camera bodies under 111mm thick; compatibility with cages depends on the cage profile and may require verification before purchase.

Can the V-mount rotate for side screens?
Yes, the rotatable V-mount bracket tilts 90 degrees downward so side-flip screens remain accessible during use.