Plus and minus signs indicate the poles on the new energy storage facility at the Fraunhofer Institute in Magdeburg, Germany. During a full-scale test, the entire Fraunhofer research center was supplied with energy from the battery. The lithium-based storage system has an available capacity of 0.5 megawatts per hour and an output of one megawatt. The storage battery is housed in a 26-ton transportable container. This type of equipment is designed to stabilize intermittent and variable energy.