Life safety device with extended shelf life
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United States of America Patent
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-
Dec 25, 2012
Grant Date -
Apr 22, 2010
app pub date -
Oct 16, 2008
filing date -
Oct 16, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A life safety device includes a battery assembly with a rechargeable battery. Extended shelf life is achieved by annually initiating an over-discharge protection mode in which a battery protection circuit prevents current flow from the battery. The life safety device remains in the over-discharge protection mode until the device is connected to a charging power source at the time of installation. The battery assembly then exits the protection mode and enters its normal mode of operation.
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Family
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