Battery performance monitor
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United States of America Patent
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Apr 19, 2011
Grant Date -
Jan 29, 2009
app pub date -
Feb 19, 2008
filing date -
Jul 23, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Improvements both in the methods whereby existing techniques for determining the condition of a battery are communicated to a user (for example, to the owner of a private vehicle, or to the service manager of a fleet of vehicles), or the vehicle's operating system, and in the methods for evaluating the condition of the battery are disclosed. It has been discovered by the inventors that the difference in internal resistance of a fully charged battery as measured during charging and as measured after charging is greater for a battery in poor condition than for a new battery. The invention relates in part to instruments and corresponding methods for evaluating the condition of a battery utilizing this discovery.
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