For flexible positioning of battery with water bottle mounts anywhere on your bike frame. Very often the mount holes on the battery mount do not line up with the position of the water bottle mount holes on your frame. In the past to mount a battery has required extra holes to be drilled in the battery mount or bike frame and extra rivnuts in the frame. With Wolf Tooth's new B-RAD system that problem goes away. With 3 choices of B-RAD mounting bases you can pretty much reposition the battery anywhere that it will fit on your frame as long as there are water bottle mounts available.