tions beyond traditional energy storage, extending the benefits of embodied energy to a wider range of robot designs. [3,4] For example, stretchable batteries can theoretically be used as extensible tendons in walking robots, thereby integrating electrical and elastic energy storage into a single structural element that connects different system components. [4] However, the fabrication of such devices, especially intrinsically stretchable energy storage devices, is still in its infancy. [5][6][7] Previous work has mainly made use of micro/ nano-scale engineering strategies to achieve stretchable electrode/battery configurations, such as buckling, Kirigamipatterning, and rigid-island designs. [6][7][8][9] The complex battery geometries pose difficulties for soft device integration and next-generation on-skin applications. Furthermore, for stretchable energy storage devices, self-healability is especially important for restoring their mechanical integrity and electrochemical functionality when damage occurs during repeated bending, stretching, and electrochemical cycling. [2,3,10] Currently, most of the reported self-healable batteries are not stretchable and rely on self-healable electrodes or electrolytes rather than achieving full-device self-healability. [2,3,10] However, for practical application, the electrode only self-healing capability can only protect the whole battery from physical damages, such as cracks or fractures. The electrolyte only self-healing capability can only protect the whole battery from shorting out. Thus, in order to achieve real self-healing for the entire device, each component of the full battery needs to be self-healable. [3] Despite significant progress in developing self-healing stretchable materials, [11][12][13] skin-like autonomously self-healable and intrinsically stretchable energy storage devices have not been reported yet owing to the highly complex requirements at both materials and device levels. [2,3,10] To realize an autonomously self-healable and intrinsically stretchable battery at full-device level, five autonomous selfhealing and intrinsically stretchable components need to be developed concurrently: anode, cathode, electrolyte, separator, and substrate. [3] However, making each layer intrinsically selfhealable, stretchable, and mechanically robust, while retaining efficient charge transport and robust interfaces between multilayers, is extremely challenging. [11,14] Besides, each layer possesses additional electrical criteria for material and Next-generation energy storage devices should be soft, stretchable, and selfhealable. Previously reported self-healable batteries mostly possess limited stretchability and rely on healable electrodes or electrolytes rather than achieving full-device self-healability. Herein, an all-component self-bonding strategy is reported to obtain an all-eutectogel soft battery (AESB) that simultaneously achieves full-cell autonomous self-healability and omnidirectional intrinsic stretchability (>1000% areal strain) over a broad temperature...
