Abstract: A lithium ion cell with a polymeric anode and cathode and a separator therebetween. The separator, such as of non-woven polymeric fibers is provided with its own discrete structure, without carrier substrate, and with structural integrity, apart from being laminated/compressed between the polymeric anode and cathode elements. Operable cells are made thinner despite the self supporting discrete structure, with obtained improved rate capacity and high temperature performance.

Abstract: Internal intercell and terminal cell electrical connector elements in an electrochemical battery are protected from corrosion and build-up of high internal resistance by coating the electrical connector elements with a layer of a protective preferably non-conductive viscous material such as silicone, prior to pressure contacting or welding of the electrical connector elements. The silicone is removed only at the point of contact between the connector elements while retaining a surrounding protective barrier against the corrosive effects of the cell components and particularly corrosive fluid organic electrolyte materials in high energy density cells.

Abstract: A photographic film spool, having a central core member (for engagement with a camera film-spool anchoring and rewinding element), contains an integral battery component for electrically powering selected camera functions. The battery, comprised of one or more electrically interconnected cells, is configured for electrical engagement with terminals in the camera particularly through the camera film-spool rewind and anchoring element, with the battery thereby functioning as both the power supply and as part of the film drive. In addition, the battery has sufficient capacity to power the camera functions whereby the film may be totally utilized. The battery further has a shelf life, with such sufficient capacity, for a period of time at least as long as the utilizable shelf life of the film.

Abstract: A method and apparatus for monitoring the condition of a plurality of electrochemical cells and controlling the output of said cells upon detection of a cell having a lower capacity than the others.

Abstract: An abuse resistant electrochemical cell having an active metal anode, a fluid cathode depolarizer, an inert cathode and an electrolyte solution. The cell components are arranged in terms of relative capacities and configuration such that a sufficient amount of the dischargeable anode metal is utilized prior to the cell reaching zero volts (caused by deactivation of the cathode) whereby, upon forced discharge, polarization of both anode and cathode and deep cell reversal occur within a short period of time thereafter. This short period of time is no greater than 15% of the initial discharge time to zero volts. The cell additionally contains sufficient fluid depolarizer such that a portion thereof remains at the time of such deep cell reversal.

Abstract: Fragmentation with electrical discontinuity in a consumable electrode of an electrochemical cell is minimized by preventing a portion of said electrode from reacting by means of a reaction barrier.