Sony / IDX V-Lock – There are 2 modules, the Dual Rear and the Single Base / Front.
The Dual Rear allows the mounting of 2x battery to the rear of the Base system.(2 batteries needed for 24v)
The Single rear/ Base / Front allows the mounting of 1x battery to either the rear, base or front of the system, for 24v you would need 2x Single modules, and 24v conversion cables. For extra bottom weight and power an additional single mount should be mounted to the base or front.