BATTERY AND ENERGY STORAGE DEVICE

An energy storage device includes a cabinet body and a battery. The cabinet body is provided with an accommodating space, and the battery is arranged in the accommodating space. The battery includes a box body and an electric energy transmission group, the electric energy transmission group is arranged on one side surface of the box body in a first direction, the electric energy transmission group includes at least two power connection ends arranged in a second direction, the first direction is perpendicular to an up-down direction, and the second direction intersects with the first direction.