Smallrig SR2989 Mini-V Mount Battery Plate with Clamp Universal, using a standard V mount, fits most V mount batteries, providing longer battery life for your camera gear using your battery's power port(s). It includes a crab-shaped clamp that fits rod diameters ranging from 15mm to 30mm for attaching a V-mount battery to a tripod, light stand, or portable ring for gimbals.
The plate itself has two 1/4-20" countersinks, two 1/4-20" thread holes, and four M4 thread holes that may be used to attach a twin rod clamp, a magic arm, or other accessories, allowing you to affix a V mount battery to your camera setup as desired. The mini-shaped form makes it lighter and more portable.