COMPACT RECHARGEABLE THIN FILM BATTERY SYSTEM FOR HEARING AID
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United States of America Patent
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Issued Date -
Jan 8, 2009
app pub date -
Jul 2, 2007
filing date -
Jul 2, 2007
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Abandoned
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Abstract
A rechargeable battery module for powering an external electronic device comprises a rechargeable thin film battery, a receiving induction coil, and a battery control circuit. The battery control circuit comprises a rectifier circuit, a battery charging circuit to limit the charging voltage provided by the direct current to the battery to a maximum charging voltage, and a battery discharging circuit to terminate a discharge voltage from the battery to less than a predetermined discharge voltage. A pair of output terminals to provide an output voltage to an external electronic device.
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