In a polymer electrolyte battery provided with a positive electrode, a negative electrode, and a polymer electrolyte, a polymer-based material containing a copolymer of ethylene glycol acrylate compound represented by the following general formula and alkyl acrylate represented by the following general formula is used as said polymer electrolyte. It is also realized to prevent the foreign matter from entering into a tank via the opening of a mouthpiece even when it is produced. Moreover, the NoC can retain its original logical topology without isolating any core after resetting the connection channels in response to the damaged routers and connection channels. The hip harness is preferably divided into independent left and right halves that are each pivotally attached to a frame element within the front lower portion of the pack.