Abstract: A thin battery is configured with improved durability of foil-like electrode terminals. The thin battery has an electricity-generating element housed inside a battery outer casing with a pair of electrodes of the electricity-generating element being connected to electrode terminals that extend out from the outer edges of the battery outer casing. The electrode terminals have a base portion located partially with the battery outer casing and a tip portion spaced from the battery outer casing with strength transition point being formed between the base portions and the tip portions. The strength transition points of the electrode terminals are positioned to the outside at some distance away from the outer edge of the battery outer casing.

Abstract: A method for treating electrode tabs of a crude cell for a lithium secondary battery, crude cell for a lithium secondary battery manufactured according to the method, and a lithium secondary battery employing the crude cell are disclosed.

Abstract: A rectangular alkaline storage battery includes an electrode plate which can be easily prepared and has a high packing density of active material and volumetric energy density. A connected negative electrode plate with hydrogen-absorbing alloy negative electrode plates is bent into a U-shaped form at a central portion (connecting portion). A composite positive electrode plate is then sandwiched by the hydrogen-absorbing alloy negative electrode plates with a separator made of an unwoven polypropylene fabric provided interposed therebetween to prepare an electrode plate unit. Two such electrode plate units are then laminated to form a group of electrode plates.

Abstract: An electrochemical cell having an improved current connector. The electrochemical cell includes a plurality of positive and negative plates and a separator interposed therebetween; a first current connector for electrically connecting adjacent ones of said positive plates; and a second current connector for electrically connecting adjacent ones of said negative plates. Each of the first and second connectors includes a spring member defined by adjacent turns respectively having spaces therebetween, wherein the positive plates are partially disposed in the spaces of the first connector and the negative plates are partially disposed in the spaces of the second connector. The spring member may be a coiled member of a serpentine member. Alternatively, the current connector is a V-shaped member having the slots formed therein by etching or the like.

Abstract: A lithium ion battery configured to yield a high energy density output by minimizing head space, i.e., wasted interior volume, within the battery case and/or by reducing electrical energy losses internal to the battery.

Abstract: The present invention provides a high output storage battery with a high reliability that is easy to fabricate. This storage battery comprises a plurality of monoblock containers united to each other with space provided between the adjacent monoblock containers and one common cover to seal the openings of those monoblock containers. Each monoblock container has a plurality of cell compartments separated from each other by partitions. Each of those cell compartments houses an assembly element comprising a plurality of positive electrode plates and negative electrode plates stacked with separators placed between them.

Abstract: A lithium ion secondary battery having an irregular shape with a unitary anode and unitary cathode that are spirally wound and that provide a high energy density for an implantable biomedical device.

Abstract: A rectangular electrode plate including a core metal sheet and a mixture paste coated thereon has a lead on one long side edge thereof where no mixture is coated, and a mixture non-coated part on the other side edge thereof. Positioning holes are punched only in the lead so that the stress exerted when punching the holes will not cause the mixture paste to fall off. Stacked electrode plates are accommodated within a magazine with a certain clearance between the three side edges of the electrodes other than the lead and the inner surface of the magazine, and fed one by one to be assembled into an electrode plate group to form a battery.

Abstract: A closed battery, according to the invention, comprises a substantially flat box-type outer case 60 having electrical conductivity, provided with an opening on one side in the longitudinal direction thereof and other peripheral sides that are closed, a spiral electrode body 21 housed in the outer case, comprising a positive electrode, a negative electrode, and a separator interposed therebetween, an electrode current collector tab 21a larger in thickness than a core body, welded to a cut and raised piece that is cut and raised from an exposed part of the core body of one of the electrodes of the spiral electrode body, and a sealing plate 50 for covering and sealing the opening of the outer case, wherein the outer case is sealed by laser-welding with the electrode current collector tab being clamped between the rim of the opening and the sealing plate when sealing the opening of the outer case.

Abstract: A cell such as a lithium ion cell consists of an anode and a cathode comprising respective lithium ion insertion materials, separated by an electrolyte. A practical cell may be made by stacking a plurality of anode plates (14) and cathode plates (12) alternately, and interleaving a continuous layer (10) of polymer electrolyte or separator material between successive anode and cathode plates so it forms a zigzag. If the continuous layer is a separator, the assembly is then contacted with a solution comprising lithium salt in a compatible organic solvent, which provides the cell electrolyte. This procedure enables cells to be made with thin electrolyte layers, for example less than 30 &mgr;m thick, and hence of low internal resistance.

Abstract: A lithium ion polymer secondary battery is a laminate of a positive-electrode sheet of a positive-electrode collector foil provided with an active material thereon, a negative-electrode sheet of a negative-electrode collector foil provided with another active material thereon, and a polymer electrolyte layer interposed between the positive-electrode sheet and the negative-electrode sheet. One of the positive-electrode sheet and the negative-electrode sheet is a strip and is fan-folded at least one time so that the positive-electrode sheet is provided on the surface of the active material on the sheet. The other one of the positive-electrode sheet and the negative-electrode sheet consists of a plurality of sheet segments having an area which is the same as the area of each flat portion of the fan-folded sheet. The sheet segments are interposed between the flat portions of the fan-folded sheet so that the polymer electrolyte layer is in contact with the surfaces of the active materials.

Abstract: An annular pack for a cylindrical member for use in a wellbore includes a housing adapted to be mounted about an exterior circumference of the cylindrical member. The housing has mutually engagable annular segments. At least one of the annular segments defines a chamber for housing an electrical device.

Abstract: A sealed prismatic battery having a battery case made of a plurality of prismatic cell cases coupled together via partition walls, electrode plate groups, and collectors bonded to lead portions on both sides of the electrode plate groups. In at least one side wall of the battery case is formed openings at locations corresponding to the partition walls such as to open to the cell cases on both sides of the partition walls. Pairs of conductive connection plates are connected to each other through the partition walls and formed with connection pieces that face the openings. The collectors are connected together via the conductive connection plates, i.e., they are connected to the connection pieces after the electrode plate groups are encased in the cell cases, and the openings are sealed by sealing plates in a manner that separates the cell cases.

Abstract: An alkaline storage battery including a group of spiral electrodes composed of positive and negative electrode plates spirally wound with a separator interposed therebetween and contained in a metallic cell casing used as an external terminal wherein the group of spiral electrodes is formed at its central portion with a space defined by a winding core during the winding process of the electrode plates and is provided with a first current-collector welded to an upper end of one of the electrode plates and a second current-collector welded to a lower end of the other electrode plate, wherein the second current-collector is welded to an internal surface of the bottom of the cell casing without being welded to an end portion of the other plate located at the outermost periphery of the group of spiral electrodes, and wherein the other electrode plate at the outermost periphery of the group of spiral electrodes is pressed into contact with an internal peripheral wall of the cell casing.

Abstract: A lithium ion battery configured to yield a high energy density output by minimizing head space, i.e., wasted interior volume, within the battery case and/or by reducing electrical energy losses internal to the battery.

Abstract: The battery is constituted to satisfy B/A≧0.57, wherein “A” represents a width of an active material region and “B” represents a width of each electrode terminal.

Abstract: A battery module includes a plurality of cells accommodating an electrode plate group and an electrolyte, and a single integrated battery case for accommodating the plurality of cells. The ratio of the component resistance including the connecting resistance between the cells to the reactive resistance of the electrode plate group and the electrolyte in each cell, is set in the range of 1:99-40:60 at a temperature of 25° C. Thereby, the internal resistance per cell is reduced, and higher power output and improved service life characteristics are achieved.

Abstract: A sealed prismatic battery has a battery case made of a plurality of prismatic cell cases coupled together via partition walls. Electrode plate groups are accommodated together with liquid electrolyte in each of the cell cases. Each electrode plate group consists of alternately stacked-up positive and negative electrode plates with separators interposed therebetween, lead portions of positive and negative electrode plates being protruded on opposite sides. Collectors are bonded to these lead portions. Between the collectors and end walls (and/or partition walls) of the battery case are provided conductive plates that are connected to the collectors one or more than one location in their middle part so as to decrease the resistance between connection terminals and the electrode plate groups.

Abstract: An electric storage battery and method of manufacture thereof characterized by a feedthrough pin which is internally directly physically and electrically connected to an inner end of a positive electrode substrate. A C-shaped mandrel extends around the pin and substrate end enabling the pin/mandrel to be used during the manufacturing process as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly. The pin additionally extends from the battery case and in the final product constitutes one of the battery terminals with the battery case comprising the other terminal. Active material is removed from both sides of the outer end of the negative electrode in the jellyroll to allow room for adhesive tape to secure the jellyroll. The electrolyte is injected through the open end of the case after the endcap is welded to the negative electrode but before sealing the endcap to the case. The electrolyte is preferably injected through the C-shaped mandrel to facilitate and speed filling.

Abstract: The invention provides a closed type battery comprising an electrode terminal formed by caulking a metal material mounted on a battery can via an insulating member with a different metal, wherein changes in contact resistance with years are reduced. In the electrode terminal, an electrode-drawing sheet mounted on the battery header through an insulating member is caulked integrally with an electrode-leading pin formed of a metal different from a metal forming the electrode-drawing sheet. A joint is provided by laser welding on at least one site on a surface portion of contact of the electrode-drawing sheet with the electrode-leading pin.

Abstract: A metal plate and an electrode in a polymer lithium ion secondary battery or the like are welded certainly, and it is accomplished to further improve the reliability and the durability thereof. Each of an upper metal plate (7a) and a lower metal plate (9a) on the positive pole/terminal is welded to a pole/terminal of positive electrode (3) so that the pole/terminal of positive electrode (3) may be sandwiched from each of the upper and lower sides. Moreover, each of an upper metal plate (7b) and a lower metal plate (9b) on the negative pole/terminal is welded to a pole/terminal of negative electrode (5) so that the pole/terminal of negative electrode (5) may be sandwiched from each of the upper and lower sides. This eliminates occurrence of poor welding in the electric resistance welding.

Abstract: In a battery comprising an outer casing, positive and negative electrodes provided in the outer casing, and an electrolyte provided therebetween, the outer casing being electrically connected to one of the positive and negative electrodes to constitute one of electrode terminals, the other being connected to the other electrode terminal which is electrically insulated from the outer casing, and at least one of the positive and negative electrodes and the electrode terminal being connected to each other through a collector, the collector includes a plate-shaped body section and a connecting piece extended in an almost vertical direction from an end of the body section, and the body section or the connecting piece is provided with a bending guide section which can be bent in such a direction that the connecting piece approaches the body section.

Abstract: A low profile collector and seal assembly for sealing the open end of a container of an electrochemical cell and providing venting of pressurized gases. An electrochemical cell has a can with a closed bottom end and an open top end, positive and negative electrodes disposed in the can, and a collector and seal assembly disposed in the open top end of the can for closing the open top end of the can. The collector and seal assembly includes a current collector and an annular seal that move relative to each other from a sealed position to a vented position when the internal cell pressure reaches a pressure threshold to vent pressurized gases.

Abstract: A battery includes a battery enclosure (3), a power-generating unit (50) accommodated in the battery enclosure (3), positive and negative terminal electrodes (1, 2). The battery enclosure (3) is composed of a laminate film compounded of metal and a polymer material, and has a rectangular shape. The power-generating unit (50) includes positive electrode collectors (5), negative electrode collectors (7) and separators (8). The positive and negative terminal electrodes (1, 2) have dimensions substantially equal to those of the positive and negative electrode collectors (5, 7), respectively. Further, the positive and negative terminal electrodes (1, 2) protrude from mutually different sides of the battery enclosure (3). The positive terminal electrode (1) is formed by protruding the positive electrode collectors (5) from the battery enclosure (3) in a state where end portions of the positive electrode collectors (5) are mutually stacked.

Abstract: An electrochemical element having a winding electrode set comprises a strip positive electrode, a strip negative electrode and a strip separator which is located between them, which are wound up in a spiral to form an electrode winding. The electrochemical element has a cylindrical housing for holding the electrode winding, and a sealed cell pole which is isolated from the housing. The physical distance between the edge of at least one winding electrode and one pole is bridged by a current collector with spring elements. The current collector provides the connection between the electrode and one pole. The spring elements can be conductively connected to collector disks, to the cover and to the bottom of a cup of the electrochemical element.

Abstract: The invention provides a closed type battery comprising an electrode-leading terminal formed by caulking that ensures satisfactory sealing sealability. That terminal comprising a metal plate for sealing up an opening in a battery can, an insulating member that cover a through-hole provided through the metal plate and both surfaces of the metal plate around the through-hole, an electrode-drawing sheet positioned on a surface of the insulating member located on an outer surface of a battery and an electrode-leading pin that is inserted into the through-hole in the electrode-drawing sheet and caulked from above and below. At the surface of contact of a flange of the electrode-leading pin with the insulating member there is provided at least a projection.

Abstract: The invention provides a closed type battery having no electrolyte leakage, etc. and improved airtightness, which comprises a battery header in which an electrode-drawing sheet of polarity opposite to that of a battery can is fixed by caulking to an insulating member fitted into a through-hole in a metal sheet while an electrode-leading pin remains inserted into the through-hole. An internal insulating sheet mounted on the surface of the metal sheet of the battery header located inside the battery can comes into contact at two or more surfaces with an external insulating sheet mounted on a surface of the metal sheet of the battery header located outside the battery can.

Abstract: A sealed battery includes a can having an opening, a rolled electrode assembly inserted into the can, and a cap assembly sealing the opening. The rolled electrode assembly has first and second electrodes and a porous separator disposed between the first and second electrodes. The first electrode has a first base plate and a first active material deposited on the first base plate, and the second electrode has a second base plate and a second active material deposited on the second base plate. Central turns are disposed around an imaginary central axis of the rolled electrode assembly and support the rolled electrode assembly. The central turns include at least 1.5 turns of one of the first and second base plate and the porous separator.

Abstract: A multi-cell structure battery (1A) comprising: a plurality of columnar cells accommodated in a casing (11); bus bars (23A, 23B) to connect respective terminals of the cells; signal transmitting wires (16) to connect the respective cells to an external device; a cell holder (12) to hold the cells; and a covering (13) fixed to the cell holder so as to oppose against the terminals of the cells, the bus bars being disposed on an inner surface of the covering opposed to the terminals of the cells and the signal transmitting wires being disposed in an outer surface of the covering.

Abstract: An electrical power generator includes a plastic cylindrical case that has an interior divided into a plurality of chambers. A copper electrode and a zinc electrode are disposed within each of the chambers. The copper electrodes have a positive electromotive force. The zinc electrodes have a negative electromotive force. The electrodes are in a circuit arrangement that has a negative terminal and a positive terminal. The negative output and a positive output terminals are respectively connected to the positive and negative outputs of the generator.

Abstract: Provided are a cap assembly and a rectangular type secondary battery having the cap assembly. The cap assembly includes a cap plate made of a metallic or nonmetallic material, a hollow, low-melting point glass metal tube inserted into a hole formed in the cap plate, and a metallic or nonmetallic pin inserted into the hollow glass metal tube, wherein the cap plate, the glass metal tube and the pin are atomically bonded with one another at their contact areas by high-temperature heating.

Abstract: A sealed battery has an outer can having an opening and functioning also as an electrode terminal, a sealing member fitted in the opening of the outer can and functioning also as an electrode terminal which is different in polarity from the outer can, and a spiral-wound electrode assembly contained in the outer can. The spiral-wound electrode assembly includes a positive electrode, a negative electrode and a separator wound together spirally, in which the positive electrode and the negative electrode are separated by the separator and the outermost coil of the separator forms the outer circumferential face of the spiral-wound electrode assembly. A substrate included in the positive or negative electrode which is adjacent to the outermost coil of the separator has an exposed portion. The exposed portion projects in the axial direction of the spiral-wound electrode assembly beyond the outermost coil of the separator and is in direct contact with the inner face of the outer can.

Abstract: An electricity storage/discharge device includes a plurality of electrode plates separated by isolator members. Each of the electrode plates includes at least two outwardly extending current collecting terminals, at least one conductor through-hole, and at least one isolating opening. The electrode plates can be circular, partially circular, or polygonal, and are electrically connected in series or parallel combinations to plates of opposite or same polarity by a plurality of conductor rods arranged to pass through and be electrically connected to selected ones of said through-holes to form multiple input/output circuits. Isolating openings in the form of notches or additional through-holes having a size larger than the size of the conductor rods are provided to permit passage of the conductor rods through plates to which the rods are not electrically connected.

Abstract: An electric power generating element of a battery is covered with an electric conductor including a conductor member of a positive electrode electrically connected to a positive plate, a conductor member of negative electrode electrically connected to a negative plate, and a separating member, and an electric resistance per unit length of at least one of the conductor member of the positive electrode and the conductor member of the negative electrode is made to be smaller than that of the current collector electrically connected to the conductor member. For example, by making a thickness of the conductor member of the positive electrode to be larger than that of the current collector of the positive electrode, the electric resistance per unit length of the conductor member of the positive electrode can be made smaller than that of the current collector of the positive electrode.

Abstract: Provided are alternative fabrication methods and compositions for an electrochemical cell. The methods of the present invention are applicable to the manufacture of polymer-cased lithium-ion secondary battery cells. Briefly, electrochemical cell fabrication techniques and articles that enhance the adhesion of polymer-metal laminate packaging materials and components to conductive leads (tabs) to thereby provide a reliable hermetic seal are provided. The tab surface treatments include chromate conversion coatings, phosphate conversion coatings, anodization, and surface cleaning.

Abstract: Disclosed is a nonaqueous electrolyte secondary battery comprises a sealing unit including a conductive support plate, wherein the conductive support plate contains at least one kind of a conductive material selected from the group consisting of a metal, an alloy and a composite metallic material, each of the metal, the alloy and the composite metallic material has a modulus of elasticity (Young's modulus) at 25° C. that falls within a range from 1×1011 Pa to 3.27×1011 Pa, and the conductive support plate has an area resistance value RS at 20° C. falling within a range from 0.032 (&mgr;&OHgr;·cm2) to 1.24 (&mgr;&OHgr;·cm2).

Abstract: An element body for a compressible stack of battery elements is provided. The element body defines a cavity for receiving the compressible stack of battery elements. The cavity has a height that is smaller than an uncompressed height of the compressible stack of battery elements. A cover compresses the compressible stack of battery elements to about the height of the cavity. The stack has a plurality of positive plates each having a positive lug, a plurality of non-conductive separators, and a plurality of negative plates each having a negative lug is provided. The positive plates, separators, and negative plates are configured into the compressible stack.

Abstract: In a prismatic sealed battery module which includes a plurality of electrode plate groups, collectors joined to leads on both sides of the electrode plate group, and a prismatic battery case for storing the plurality of electrode plate groups, a connected-electrode-plate-group body is constituted by connecting the plurality of electrode groups with collectors interposed between them. A sheet covering both side surfaces and a bottom surface of the peripheral surfaces of the connected-electrode-plate-group body is provided. After gaps between the sheet and outer edges of the collectors are sealed, the connected-electrode-plate-group body is placed in the prismatic battery case. Thereby, the current-carrying paths between the electrode plate groups are short and straight, resulting in reduced internal resistance.

Abstract: A rod-shaped coupler for connecting a current collector to a terminal pin, is described. The coupler is secured to the entire width of the current collector, preferably the cathode in a cell of a case negative design, and is generally aligned along the longitudinal axis of the electrode assembly. An extension portion of the coupler extends beyond the electrode assembly and is of a hollow, tubular structure crimped or otherwise collapsed into surrounding contact with the terminal pin. The coupler and terminal pin are then welded together. Preferably, the terminal pin is roughened prior to effecting the connection. This method of attachment is suitable for either primary lithium or secondary lithium ion cells, particularly those powering implantable biomedical devices.

Abstract: A battery includes a container with electrolyte filled therein and a plurality of positive plates, a plurality of separation layers and a plurality of negative plates are alternatively arranged in the container. The negative plates are connected to an inside of a negative end of the container and the positive plates are connected to a nickel member which is connected to an upper plate in a positive end of the container. An alkali proof rubber is located between the nickel member and the upper plate. A positive cap is connected to the upper plate and extends from a positive end of the container.

Abstract: Alithium secondary battery for use in electric vehicle, includes: a battery case, and an electricity-generating body including a positive electrode, a negative electrode, and a separator, the positive and the negative electrode being wound or laminated via the separator so that the positive electrode and negative electrode are not brought into direct contact with each other. Each single battery has a ratio (X/E) of battery output X (W) and battery energy E (Wh), of 2 to 36 or a product (R×E) of battery internal resistance R (m&OHgr;) and battery energy E (Wh), of 50 to 900 (m&OHgr;·Wh). The lithium secondary battery is used in an electric vehicle as combined batteries formed by connecting a required number of the single batteries in series.

Abstract: Mechanically and thermally improved rechargeable batteries, modules and fluid-cooled battery pack systems. The battery is prismatic in shape with an optimized thickness to width to height aspect ratio which provides the battery with balanced optimal properties when compared with prismatic batteries lacking this optimized aspect ratio. The optimized thickness, width and height allow for maximum capacity and power output, while eliminating deleterious side affects. The battery case design allows for unidirectional expansion which is readily compensated for by applying external mechanical compression counter to that direction. In the module, the batteries are bound within a module bundling/compression means under external mechanical compression which is optimized to balance outward pressure due to expansion and provide additional inward compression to reduce the distance between the positive and negative electrodes, thereby increasing overall battery power.

Abstract: The invention relates to an electrical storage cell (1) comprising a positive terminal (5), a negative terminal (4), a positive electrode (8) and a negative electrode (9) electrically connected to the positive terminal and to the negative terminal, respectively, a collector of a first polarity (20) having a plane part (21) electrically connected to the electrode of the first polarity, and bent electrical connection means (26) connecting the plane part of the collector to the terminal of the first polarity and having a bending radius of curvature less than that of a part having the same thickness as the plane part.

Abstract: The invention provides a lithium secondary cell including an inner electrode body impregnated with a non-aqueous electrolyte, made up of a positive electrode and a negative electrode each made of at least one metallic foil wound or laminated together and collectors to lead out a current from this inner electrode body. The edges of the metallic foil of the positive electrode and/or the negative electrode and predetermined parts of the positive electrode collector and/or negative electrode collector are joined together to lead out a current from the inner electrode body. The edges of the metallic foil, the edges (joint edges) arranged to be joined to the predetermined parts of the positive electrode collector and/or the negative electrode collector and the predetermined parts of the positive electrode collector and/or the negative electrode collector are joined together. The lithium secondary cell has excellent productivity and space-saving capability.

Abstract: Positive electrode plates 2 and negative electrode plates 3 are stacked with separators 4 in between them to form an electrode plate unit 1, the end faces of electrode plates 2 and 3 with mutually opposite polarity being made to protrude from the two side surfaces of this electrode plate unit 1. A thermal spray metal coating 8 is provided to each of the two side surfaces of the electrode plate unit 1 for integrally joining the electrode plates 2 and 3, and for connecting the collector plates 5 and 6 to the electrode plates.

Abstract: A battery system having lead-acid cells, vertically upstanding cell support frame for supporting the cells, vertically upstanding members with receptacle means for slidably receiving and retaining vertical cell supports, and manually assemble means for connectively maintaining and spacing the upstanding members for receipt of the cell supports. The cells have horizontal positive and negative sandwiched lead-metal plates contained within a cell case resting on the vertical supports. The case has an expandable region surrounding the terminal for relieving pressure on that terminal from grid expansion while simultaneously maintaining the integrity of the case seal to the terminal. The cell support frame includes an elongated strap external of the case for connecting together terminals of the cell and having an output terminal and a central portion on the strap for electric communication with another battery.

Abstract: An electrode body in which current collecting bodies are welded to upper and lower end surfaces of a spiral electrode group formed by interposing a separator between a positive electrode plate and a negative electrode plate is installed into a battery case. After the current collecting body is welded to the battery case, the cylindrical body is loaded on the diameter of the current collecting body, then the blade portions are welded, then the electrolytic solution is injected, and then a pair of electrodes are arranged on the port-sealing body and the battery case while bringing the bottom surface of the port-sealing body into contact with the peripheral side surface of the cylindrical body.

Abstract: A multi-cell Li-ion or Li-ion polymer battery, comprised of a plurality of generally planar cell sections, each having at least one flat, metallic current collector tab extending therefrom. A plurality of the current collector tabs are aligned in spaced-apart relationship and extend from one side of the cell body. Each of the tabs has a free end and an intermediate portion. A tab weldment joins the free ends of the tabs but leaves the intermediate portions of the tabs unattached to each other. The tabs are welded together when the tabs are stacked together at a location offset from the cell body, such that the tabs are folded into a generally U-shaped configuration with the unattached intermediate portions forming a smooth layered, generally U-shaped structure when the tab weldment is disposed adjacent the one side of the cell body.

Abstract: A lithium ion secondary battery having an irregular shape with a unitary anode and unitary cathode that are spirally wound and that provide a high energy density for an implantable biomedical device.

Abstract: A laryngoscope constructed of materials including metal components having very low magnetic susceptibilities is described. The battery powering the laryngoscope lamp is a lithium battery also constructed of materials having low magnetic susceptibilities. The battery further includes a unique terminal configuration that prevents the inadvertent use of other batteries, including non-magnetic batteries, in the laryngoscope. A unique lamp retaining mechanism provides for quick and easy replacement of the lamp.