Vello BG-S2 Battery Grip for Sony Alpha a7, a7R, and a7S

The Vello BG-S2 Battery Grip is designed specifically for the Sony Alpha a7, a7R, and a7S cameras and holds one or two NP-FW50 batteries. With two batteries in the grip your shooting time is effectively doubled. The design of a battery grip offers a comfortable and secure way in which to hold your camera, especially in the vertical position.