TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The method comprises: (a) depositing the anode layer and the cathode layer on a conductive substrate, preferably a sheet, a metal strip or a metallic insulating film, where the conductive substrate or its conductive element serves as anodic and cathodic current collectors; (b) depositing a solid electrolyte layer on the layers; (c) depositing the material layer on the layers; and (d) performing heat treatment and/or mechanical compression for obtaining a contact between the layers to form the multi-layer. The metal layer deposition step is carried out by: (i) vacuum deposition process, preferably physical vapor deposition process, chemical vapor deposition process or plasma assisted chemical vapor deposition process; (ii) sol-gel deposition process; (iii) nanoparticle deposition process, preferably spin coating or Langmuir-Blodgett deposition process; (iv) electrospraying process; (v) aerosol deposition process; and (vi) electrophoretic deposition process. The step (d) is carried out at a pressure of 10-100 MPa, preferably 10-50 MPa. The thermal treatment is carried out at a temperature, which is less than 0.7 times, preferably 0.3 times a melting or decomposition temperature of the metal layer. The method further comprises encapsulating the battery by the deposition of an encapsulation layer. Preferred Components: A thickness of the solid electrolyte layer is less than 100 nm, preferably less than 30 nm. The metal layer comprises materials consisting of: (a) oxide materials including lithium germanium vanadium oxide (Li(3.6)(Ge)(0.6)V(0.4)O(4)), lithium oxide-niobium oxide (Li2O-Nb2O), lithium silicon oxide (LiSiO4), lithium zinc germanium oxide (Li14Zn(GeO4)4), lithium lanthanum titanium oxide (Li(0.35)La(0.55)TiO3), lithium lanthanum titanium oxide (Li(0.5)La(0.5)TiO3), lithium lanthanum zirconium oxide (Li7La3Zr2O12) and lithium lanthanum zirconium oxide containing compound of formula (Li(5+x)La3(Zrx,A2-x)O12) (I); (b) nitride or oxynitride materials including lithium nitride, lithium phosphorus oxynitride (Li3PO4-xN2x/3), lithium germanium oxynitride (Li4GeO4-xN2x/3) where x is 0-4, lithium boron oxynitride (Li3BO3-xN2x/3), where x is 0-3, lithium or phosphorus oxynitride, lithium silicon phosphorus oxynitride, born containing lithium phosphorus oxynitride, sulfur containing lithium phosphorus oxynitride and/or lithium phosphorus aluminum oxynitride materials, lithium boron oxynitride, lithium silicon boron oxynitride, sulfur containing lithium boron oxynitride and/or lithium boron aluminum oxynitride materials, preferably lithium phosphorus oxynitride (LixPOyNz) material, where x is 2.8, y is 2 and z is 3, sulfur containing lithium phosphorus oxynitride (LiwPOxNySz), where x is 3.2-3.8, y is 0.13-0.4, z is 0-0.2 and w is 2.9-3.3, sulfur containing lithium phosphorus aluminum oxynitride (LitPxAlyOuNvSw), where t is 2.9-3.3, x is 0.84-0.94, y is 0.094-0.26, u is 3.2-3.8, v is 0.13-0.46 and w is 0-0.2, lithium silicon phosphorus oxynitride (Li(1.9)Si(0.2)P(1)O(1.1)N(1)) or lithium phosphorus oxynitride (Li(2.9)PO(3.3)N(0.46)); (c) sulfur materials including lithium sulfur containing compound of formula (LixM1-yMayS4), lithium sulfide (Li2S), boron sulfide (B2S3), phosphorus sulfide (P2S5), lithium sulfide-phosphorus sulfide (70Li2S-30P2S5), lithium phosphorus sulfide (Li7P3S11), lithium germanium phosphorus sulfide (Li10GeP2S12), lithium phosphorus sulfide (LiPS6), lithium germanium phosphorus sulfide (Li(3.25)Ge(0.25)P(0.75)S4), lithium phosphorus sulfur containing compound of formula (Li10MP2S12) (II), and mixture of lithium sulfide and compounds consisting of phosphorus sulfide, germanium sulfide, gallium sulfide or silicon sulfide; (d) phosphate or borate materials including lithium phosphate, lithium titanium phosphate (LiTi(PO4)3), lithium aluminum phosphate containing compound of formula (Li1+xA1xM12-x(PO4)3) (III), lithium aluminum titanium phosphate (Li(1.3)A1(0.3)Ti(1.7)(PO4)3), lithium aluminum titanium silicon phosphate (Li1+x+yAlxTi2-xSiyP3-yO12), where x is 0-1 and y is 0-1 and lithium germanium titanium silicon phosphate containing compound (Li1+x+zMx(Ge1-yTiy)2-xSizP3-zO12) (IV), where x is 0-0.8, y is 0-0.10 and z is 0-0.6; and (e) materials consisting of mixture of lithium sulfide and compounds including lithium phosphorus oxide, lithium phosphorus oxynitride (Li3PO4-xN2x/3), lithium silicon oxynitride (Li4SiO4-xN2x/3), lithium germanium oxynitride (Li4GeO4-xN2x/3) or lithium boron oxynitride (Li4BO4-xN2x/3), where x is 0-4, and a mixture of lithium sulfide and/or boron sulfide, silicon sulfide, phosphorus sulfide, germanium sulfide and gallium sulfide and a compound including lithium silicate, lithium borate or lithium phosphate. The metal layer is constituted of polymer impregnated lithium salt. The lithium salt consists of lithium chloride, lithium bromide, lithium perchlorate, lithium tetrafluoroborate, Lithium tetrafluoroborate, lithium hexafluoro arsenate, lithium acetate, lithium trifluoromethanesulfonate, lithium bistrifluoromethylsulfonyl imide, lithium thiocyanate and lithium nitrate. The conductive substrate is a metal sheet optionally coated with a noble metal, a polymer sheet optionally coated with a noble metal, or a graphite sheet optionally coated with a noble metal. The metal sheet is made of aluminum or copper. The noble metal comprises gold, platinum, palladium, vanadium, cobalt, nickel, manganese, niobium, tantalum, chromium, molybdenum, titanium, palladium, zirconium, tungsten or their alloys.A = Sc, Ti, V, Y, Nb, Hf, Ta, Al, Si, Ga, Ge or Sn;x = 1.4-2;M = Si, Ge or Sn;Ma = P, Al, Zn, Ga or Sb; andM1 = Ge, Ti or Hf.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The battery comprises: encapsulation layers, preferably a ceramic or vitroceramic layer, where the second encapsulation layer is deposited on the first encapsulation layer; and terminals. The terminals are coated with a nickel layer in contact with electrochemical cells, where the nickel layer is coated with a tin layer.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polymer consists of polyethylene oxide, polyimide, polyvinylidene fluoride, polyacrylonitrile, polymethyl methacrylate and polysiloxane. The polymer sheet comprises polyethylene naphthalate, polyethylene terephthalate, polypropylene, Teflon(RTM: Polytetrafluoroethylene) and polyimide, preferably Kapton(RTM: Polyimide film). The second encapsulation layer is made of silicone polymer.