“The portability of the environmentally friendly T4-Master energy storage system is clear at first glance: equipped with wheels and a practical telescopic handle, the device is designed like a piece of luggage for flexible power supply on the go,” said the jury, praising the successful combination of form and function. To provide grid-independent energy for a wide range of scenarios, this small, lightweight power pack can be charged via USB, solar panels, wall plugs or EV charging stations. The rounded corners give the device stability and impact resistance, while the concave surfaces prevent damage to the displays and connections, which are arranged in four different directions.