A stretchable battery comprising at least one electrochemical cell further comprising a first electrode having a first active material coupled with a first current collector, a second electrode having a second active material coupled with a second current collector, an electrolytic separator configured between the first and second electrodes, and at least one stretchable substrate coupled with the formation of at least one electrochemical cell, wherein the stretchable substrate encapsulates the formation and is capable of reversible stretching.