Battery pack having theft deterrent circuit

Details Battery pack having theft deterrent circuit Battery pack having theft deterrent circuit

1996-06-05

1997-01-14

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 15, 320 29, 320 30, 320 49, 320 54, H02J 700, H01M 1044

Patent

active

055943195

ABSTRACT:
A battery pack (10) has a memory (26) for storing a password. Upon connecting to a host device (12), or similar load, the battery waits for a data word to be communicated from the host device over a communications channel (22). If an incorrect data word is received a predetermined number of time, or if an initial power time period, as defined by a timer (30), is reached, a switch (16) is opened, thereby disconnecting the battery cell or cells (14) from the load.

REFERENCES:
patent: 5073767 (1991-12-01), Holmes et al.
patent: 5179337 (1993-01-01), Staarman et al.
patent: 5189400 (1993-02-01), Schultz
patent: 5371453 (1994-12-01), Fernandez

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