Dedicated to the Sony a9 III mirrorless camera, the VG-C5 Vertical Grip offers both extended battery and a more comfortable grip when shooting in the vertical orientation. The grip accepts either one or two NP-FZ100 batteries to increase the effective battery life for longer shooting sessions, and the batteries can be charged in the grip while attached to the camera via the body's USB port. Compared to previous-generation vertical grips, the VG-C5 also has refined circuitry that supports parallel power supply to provide even longer effective operation times and and the remaining battery life for both batteries can be indicated on the camera display.

The grip's design maintains the same layout as the camera body itself, and includes a secondary shutter button and Multi-Selector for intuitive use, as well as a secondary C5 front custom button. The grip is built from magnesium alloy and is dust and moisture resistant to match the weather-sealing of the camera itself.