TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: The battery cells have energy densities of not greater than 50 Wh/m2 of electrochemical cell(s). The battery cells are free from solid electrolyte interface/interphase layers. The battery cells have specific energies of at least 300 Wh/kg or at least 700 Wh/l. The battery cells are capable of achieving at least 5000 cycles while being cycled at 80% of the rated capacity and which have gravimetric energy densities of at least 250 Wh/kg. The battery cells are applied in one of at least of smartphone, cellular phone, radio or other portable communication device, laptop computer, tablet computer, portable video game system, metroid prime-3 player or other music player, camera, camcorder, radio-controlled car, unmanned aeroplane, robot, underwater vehicle, satellite, global positioning system unit, laser rangefinder, flashlight, electric street lighting, and other portable electronic devices.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The system further comprises: a multicell, rechargeable solid state battery pack, where the multi-cell rechargeable battery pack comprises the solid state rechargeable cells; a first portion of the cells is connected in a series relationship; a second portion of the cells is connected in a parallel relationship; multicell, rechargeable solid state battery pack having the solid state rechargeable battery cells; and many capacitors configured at least in serial or parallel to provide a higher net energy density than the capacitors alone or conventional particulate electrochemical cells without being combined with the solid state rechargeable battery cells, and where the multicell, rechargeable solid state battery pack is characterized by an energy density of at least 500 W/kg. The multicell, rechargeable solid state battery pack is comprised of a heat transfer system and at least one electronic control configured to maintain an operating temperature of 60-200 degrees C. The rechargeable cells comprises respective outermost portions of the rechargeable cells, each of the outermost portions are in proximity of less than 1 mm from each other. The multicell, rechargeable solid state battery pack is insulated by at least one material that have thermal resistance with an R-value of at least 0.4 m2asteriskK/(Wasteriskin). The system is provided within a vehicle that is powered by at least in part by the system. The solid state rechargeable battery cells: are configured in a wound or stacked structure; utilizing lithium or magnesium as a transport ion; is configured in a format larger than 1 Amp-hour; is configured to be free from a solid-electrolyte interface layer; and is capable of greater than 80% capacity retention after more than 1000 cycles. The layer of positive and negative electrode materials each have a total surface area greater than 0.5 meters, where the rolled substrate is made of at least a polymer, a metal, a semiconductor, or an insulator. The layers are wound into a container that has an external surface area less than 1/100th the surface area of the electrochemical cell(s). The aspect ratio of the uniform cathode material (20) layer is greater than 500000 when dividing the length of the longest axis by the length of the shortest axis. The layers are continuously wound or stacked at least 30 times per cell. The negative electrode material comprises an lithium metal alloy such that the melting point of the alloy is greater than 150 degrees C.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The substrate comprises polyethylene terephthalate, a biaxially oriented polypropylene film, polyethylene naphtahalate, polyimide, polyester, polypropylene, acrylate, arimid or metallic material which is less than 10 microns thick.