Wattson is a mobile charging platform for ultra-fast charging of electric vehicles. Its main technological advantage is having developed high end mobile EV chargers. Users can get in touch with the platform to indicate the amount of charging they need and the place where the charge will take place. While doing other activities, like working or shopping the charger arrives and charges the vehicle. In cases of an stranded EV, Wattson can also avoid it being towed. Without the need to install new networks or fixed charging points, Wattson is capable of charging vehicle fleets, assistance vehicles, shared mobility services or micromobility services. Through a complex system of power electronics, energy storage and communication equipment, EVs are charged with a power of up to 300kW from a 200kWh battery. Wattson aims to help reinforce the lacking charging infrastructure and contribute to the energy transition.