Rechargeable battery pack with identification circuit, real time clock and authentication capability
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United States of America Patent
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Mar 4, 1997
Grant Date -
N/A
app pub date -
Mar 15, 1994
filing date -
Mar 15, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus is provided for identifying an individual battery pack includes at least one resistor having a particular resistance value and a supervising unit for reading the particular resistance value of the at least one resistor to determine the individual identity of the battery. A clock is provided which is used to determine the remaining useful life of the battery. Recharging is selectively allowed or prevented, depending on the identify and the remaining useful life. Additionally, the authenticity of the battery pack can be verified by using a random number used as a variable in a mathematical formula stored in the application circuit and the battery and comparing the result of the calculation.
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