Ciruitry for portable lighting devices and portable rechargeable electronic devices
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United States of America Patent
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app pub date -
Sep 24, 2009
filing date -
Dec 7, 2004
priority date (Note) -
Abandoned
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Abstract
A portable rechargeable electronic device, such as a flashlight, with external charging contacts and a short protection circuit is disclosed. The short protection circuit electrically uncouples one of the exposed charging contacts from the rechargeable power supply for the device when the charging contacts are short circuited. The charging contact is uncoupled without opening the power circuit for the device; thus, the device can continue to operate while the charging contacts are shorted. The power supply for the device may be a rechargeable lithium-ion battery pack.
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