NOVELTY - Making battery cell (100) involves providing an anode (121) component comprising a first sheet that includes an anode material and a first lithium phosphorus oxynitride (LiPON) layer covering the anode material and having randomly spaced defects; providing a cathode (111) component comprising a second sheet that includes a cathode material that includes lithium and a second LiPON layer covering the cathode material and having randomly spaced defects; and sandwiching a polymer electrolyte (130) material includes a gel and at least partially fills and fixes the randomly spaced defects.    USE - For making battery cell for laminated battery device (claimed) used in computers, mobile phones, tracking systems, and scanners.    ADVANTAGE - The battery has improved protection against dendrite formation and with improved density, electrical capacity, re-chargeability, and reliability, and smaller volume and lowered cost.    DETAILED DESCRIPTION - Making battery cell (100) involves providing an anode (121) component comprising a first sheet that includes an anode material and a first LiPON layer covering the anode material and having randomly spaced defects; providing a cathode (111) component comprising a second sheet that includes a cathode material that includes lithium and a second LiPON layer covering the cathode material and having randomly spaced defects; and sandwiching a polymer electrolyte (130) material between the LiPON layer covering the anode material of the first sheet and the LiPON layer covering the cathode material of the second sheet, where the polymer electrolyte material includes a gel and at least partially fills and fixes the randomly spaced defects in the first and second LiPON layers. The polymer electrolyte layer includes a polyvinylidene difluoride, propylene carbonate, a lithium salt, polyphosphazene and poly(bis(2-(T-methoxyethoxy ethoxy)phosphazene)).    DESCRIPTION OF DRAWING(S) - The figure shows cross-section view of lithium cell.    Battery cell (100)    Cathode (111)    Metal foil (120)    Anode (121)    Polymer electrolyte (130)