Abstract: A battery charger device and method including a charging circuit having a source of charging energy and connections for installing one or more batteries to be charged, the device having a controllable switch associated with each battery to be charged and a microprocessor for controlling the switches to establish a charging sequence of distinct repeated charging periods for each battery, a display device associated with each battery under control of a microprocessor for individually indicating the charging status of each battery, the microprocessor having inputs at which various parameters with respect to the batteries being charged are applied such as battery voltages, ambient temperatures and charging currents, the microprocessor being programmed to terminate a voltage charging operation with respect to any one or more of the batteries if the measured difference between the charging and non charging voltage of any one or more of the batteries during succeeding charging periods exceeds some predetermined valu

Abstract: The invention relates to a rechargeable battery for use in a charger device capable of delivering at least two different rates of charge current, said battery having a positive terminal and a spaced-apart negative terminal for delivering external power and receiving charging power, an indicator band disposed between the positive and negative terminals the location of which is indicative of the rate of charge that the battery can safely accommodate other than the rate of charge it could accept in the absence of the indicator band.

Abstract: A sealed galvanic cell comprising a container and a cover having a coiled electrode assembly disposed in the container. The coiled electrode assembly has an inner exposed electrode of one polarity and an outer exposed electrode of the opposite polarity. A flexible electrically conductive member secured to the cover makes electrical contact with the inner exposed electrode and exerts a radially outward force therein while the outer exposed electrode makes electrical contact with the wall of the container.

Abstract: A sealed miniature air cell having an adhesively coated, resiliently deformable member disposed between the base of the cell container which has at least one air opening therein and the air electrode, said member having an aperture defined therein which encompasses the at least one air opening in the container base and whereby said member provides support for said air electrode, provides an air diffusion chamber defined by said aperture, said air electrode and said cell container base, and effectively prevents electrolyte creepage into said air diffusion chamber.

Abstract: A sealed electrochemical cell having a secondary seal comprising a bead of a polyamide adhesive disposed on the top of the cell's gasket and extending into the cover-gasket and the container-gasket interfaces, thereby filling any crevices at those interfaces.

Abstract: An improved seal for alkaline cells comprising a gasket, a thin film of parylene and a layer of a polyamide, an epoxy resin, asphalt or a cured epoxy-polyamide resin disposed and compressed between the interface of the cover and the container of the cell providing a fluid tight seal thereat.