Wonder Mobile EV charger was designed for the emergency rescue of electric vehicles, and can provide sufficient electric power in 20 minutes to sustain most EVs for 30–60 km. The device has a double metal skeleton design, which ensures highly secure protection of the batteries. The innovative modular design makes it easy and flexible to carry and use in different scenarios. Total battery capacity is up to 6KWh, and one or two modules will be used separately.