Battery protection circuit

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C455S067110, C379S412000, C379S413000, C320S134000, C320S136000

Reexamination Certificate

active

06961592

ABSTRACT:
A protection circuit for a cellular telephone battery includes a first memory for storing battery identification data and a second memory associated with the telephone includes data relating to which battery type may be used by this telephone. When the battery is connected to the telephone, the battery identification data is compared to the battery type data stored in the telephone. The battery is automatically disconnected from the telephone if the two sets of data do not correspond to each other.

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Double Protection Circuit for Li-Ion Battery Pack; IBM Technical Disclosure Bulletin; Jan. 1998; p. 93; vol. 41, No. 01; IBM Corp. US.

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