A battery packs galvanic potential into a tiny space and is distinguishable from a bomb by the controlled release of its energy. The Kemper at the Crossroads, a satellite of the venerable Kemper Museum of Contemporary Art, has been releasing energy into the surrounding neighborhood since November 2008, with sometimes bold exhibitions of artists from around the globe. It's a world-class art space, tucked between Main and Baltimore on 19th Street, and its relatively small size belies tremendous potential. Taking over the original location of the Dolphin gallery (which relocated to the West Bottoms) has provided the Kemper extra space for new exhibitions. Under the guidance of director Rachael Blackburn Cozad, Kemper at the Crossroads is dangerously hot and ready to explode.