The D-BG4 Battery Grip for the Pentax K-7 extends shooting times by providing additional power via a second lithium-ion battery or AA batteries. The battery grip includes a tray for either battery option. It also features a vertical release button, depth-of-field preview switch, front and rear e-dials, and buttons for exposure lock and autofocus, as well as a green button and ISO button. The D-BG4 is weather-sealed to protect the battery.
The Pentax D-BG4 Grip Kit includes the D-BG4 Battery Grip, D-LI90 Lithium Ion Battery, and the Pentax Remote Waterproof O-RC1.