Electronic lock system with battery conservation features

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries

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70 63, H02J 700

Patent

active

049298801

ABSTRACT:
A battery powered electronic lock system includes a battery monitoring feature that detects three states of the lock system battery. These states correspond to three progressively weaker states of the battery. When the battery is in the first state, the lock system operates in normal fashion. When the battery is in the second state, an indicator informs the user, but operation of the lock system otherwise continues in substantially normal fashion. When the battery is in the third state, normal lock operation is curtailed and the remaining battery energy is reserved for the purpose of opening the lock for specially authorized keys.

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patent: 4800255 (1989-07-01), Imran
"EAC-1000 Electronic Access Control System Operational Manual", Supra Products, Inc., Feb. 1, 1985.

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