Battery capacity indicator
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United States of America Patent
Stats
-
Jul 16, 1991
Grant Date -
N/A
app pub date -
Mar 2, 1990
filing date -
Mar 2, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A battery capacity indicator is described which measures the battery terminal voltage at two discharge rates, monitoring the resultant differential battery voltage at predetermined time intervals, and comparing the resultant differential battery voltage to a set of predetermined differential battery voltages which are stored within a memory within the battery powered device. Each of the predetermined differential battery voltages corresponds to one of a set of predetermined battery capacities for each type of battery used in the device. The battery capacity indicator provides to the user a continuous display of the available battery capacity.
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