Method for the automatic determination of battery chemistry in portable electronic devices
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United States of America Patent
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Apr 10, 2001
Grant Date -
N/A
app pub date -
Oct 29, 1999
filing date -
Oct 29, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method that distinguishes different battery chemistries in portable electronic devices using a simple electrical test. The present method facilitates accurate fuel gauging as well as providing a safe in-device recharging scenario, eliminating the possibility that an end-user might attempt recharging a non-rechargeable battery. A simple circuit is provided in the electronic device that, in conjunction with a microcontroller, measures several distinct voltages across a newly inserted battery. A lookup table is then utilized to determine the probable battery chemistry.
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