Abstract: A battery adapter includes a first cylindrical portion having electrical terminals at each end thereof and defining an interior battery receptacle. The adapter further includes a second cylindrical portion having a pair of electrical terminals at each end and an electrical connection therebetween. The second cylindrical portion defines a notch generally aligned with the battery receptacle of the first cylindrical portion. A pair of spring connectors are captivated within the battery receptacle and connected to each of the terminals of the first cylindrical portion. A conventional disk-shaped planar battery having opposed terminal surfaces is partially inserted into the receptacle contacting the springs captivated therein. The battery extends outwardly from the receptacle into the corresponding notch of the second cylindrical portion.

Abstract: A battery adapter provides a housing having an outer shape corresponding to a pair of juxtaposed standard cylindrical type battery cells. A pair of electrical contacts are supported upon the housing to provide electrical connection to environments which would normally receive a pair of standard cylindrical type cells or combinations thereof. A long life battery having a voltage approximately double that of a standard one and a half volt battery is supported within the housing and electrical connections are provided between the terminals of the internal battery and the external terminals supported on the housing. Embodiments are shown in which the internal battery may be replaced. Embodiments which replicate either parallelly arranged or serially arranged cell combinations are shown.

Abstract: A battery adapter provides a housing having an outer shape corresponding to a pair of juxtaposed standard cylindrical type battery cells. A pair of electrical contacts are supported upon the housing to provide electrical connection to environments which would normally receive a pair of standard cylindrical type cells or combinations thereof. A long life battery having a voltage approximately double that of a standard one and a half volt battery is supported within the housing and electrical connections are provided between the terminals of the internal battery and the external terminals supported on the housing. Embodiments are shown in which the internal battery may be replaced. Embodiments which replicate either parallelly arranged or serially arranged cell combinations are shown.