TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: The anode mass contains 55-85 (60-70) wt.% graphite capable of lithium (Li) intercalation, preferably synthetic graphite, e.g. MCMB (RTM); and the cathode mass contains 50-80 (55-65) wt.% heavy metal oxide capable of Li intercalation, e.g. Li-manganese oxide (LiMn2O4), Li-cobalt oxide (LiCoO2), Li-nickel oxide (LiNiO2) or tungstate, molybdate, titanate etc. containing Li. Both may contain 0-10 (2-8) wt.% additive increasing the conductivity, preferably carbon black. The polymer gel electrolyte contains 5-15 (7.5-12.5) wt.% polymeric binder (I), 2-15 wt.% poly(N-vinyl) compounds (II), 2-5 wt.% conductive salts based on Li perchlorate (LiClO4), hexafluorophosphate (LiPF6), tetrafluoroborate (LiBF34), trifluoromethylsulfonate (LiCF3SO3), Li oxalatoborate etc., 10-60 wt.% aprotic solvent (preferably alkyl carbonate) and 1-15 wt.% builder, based on e.g. silica (SiO2) or zeolite and/or organic crosslinked polymer (III). The leads consist of copper (Cu) or, for the cathode, Cu with a corrosion-inhibiting coating, titanium or aluminum. They are in the form of wires of diameter 0.01-3 (0.1-1) mm. Preferred Process: The anode or cathode mass and electrolyte are applied in a thickness of 0.01-3 (0.02-0.2) mm. The wire electrodes and electrodes are wound or laid up to cylinders, disks and/or other geometrical figures.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: Preferred binder (I) are based on polyfluoro-elastomer, polyolefin, polystyrene, polybutadiene (isoprene) styrene rubber and poly-(4-20 C)-methacrylate. Suitable poly(N-vinyl) compounds (II) are polyvinylpyrrolidone, polyvinylimidazole, polyvinylpyridine and their copolymers, e.g. with (meth)acrylic esters, and vinyl ethers. The crosslinked polymer (III) is e.g. vinylpyrrolidone/vinylimidazole. EXAMPLE - An anode mass (parts weight) was prepared from graphite MCMB (RTM; 1900), Polyacetylenruss (RTM; conductive carbon black; 100), Fluorel FC2178 (RTM; fluoroelastomer; 250), Luviskol K90 (RTM; polyvinylpyrrolidone; 100), lithium perchlorate (LiClO4; 60), ethylene carbonate (280) and propylene carbonate (410). After mixing (60 minutes at 150 degreesC), the mass was crushed and extruded (0.150 mm thick) onto a copper wire (0.2 mm diameter) as core. A cathode mass was prepared from spinel LiMn2O4 (2615), Polyacetylenruss (RTM; 100), Fluorel FC2178 (RTM; 460), Luviskol K90 (RTM; 150), LiClO4 (112), ethylene carbonate (420) and propylene carbonate (480). After mixing (60 minutes at 115 degreesC, the mass was crushed and extruded (0.150 mm thick) onto a Cu wire (0.1 mm diameter) with a carbon corrosion coating at 135-150 degreesC. Fluorel FC2178 (RTM; 850), polyvinylpyrrolidone (850), silica (SiO2; 100) and Luviskol (RTM; crosslinked copolymer of vinylpyrrolidone/vinylimidazole 1:1, 2% crosslinker; 100) were mixed (60 minutes at 130 degreesC and extruded (0.07 mm thick) onto the cathode wire at 130-135 degreesC. The anode wire, cathode wire and polymer gel electrolyte were wound together and made into an electrochemical cell. The copper wires of the anode and cathode were contacted and the winding was sealed in a housing.