The 3.0V winding type supercapacitors represent a significant advancement in energy storage technology, blending the benefits of supercapacitors, ultracapacitors, and Electric Double-Layer Capacitors (EDLCs) into a versatile and powerful solution. These devices offer a unique set of features that cater to diverse applications across various industries. Below, we categorize and discuss the key features of 3.0V winding type supercapacitors.