Method of indicating the state of change of a battery using a li

Details Method of indicating the state of change of a battery using a li Method of indicating the state of change of a battery using a li

1988-08-02

1990-12-04

Tarcza, Thomas H.

Communications: electrical

Condition responsive indicating system

Specific condition

320 43, 320 44, 320 48, 324435, 368 10, G08B 2100, H02J 704, G01N 2746

Patent

active

H00008621

ABSTRACT:
A method of indicating the state of charge of a battery is provided wherein a LED clock electrically connected to the battery operates each time current passes through the battery and stops when there is no battery current; the clock retaining the amount of time already passed so that resumed battery operation again activates the clock to continue counting.

REFERENCES:
patent: 4638237 (1987-01-01), Fernandez
patent: 4678999 (1987-07-01), Schneider
patent: 4709202 (1987-11-01), Koenck et al.
patent: 4743831 (1988-05-01), Young
"Available Battery Time Sensor", IBM Tech. Discl. Bultn; Ferraiolo & Gass, ol. 16, #5, (Oct., 73).

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