State of charge indicator

Details State of charge indicator State of charge indicator

1982-03-26

1985-05-28

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

324429, G08B 2100

Patent

active

045203539

ABSTRACT:
A method and apparatus for producing a visual signal of the state of charge of a battery selectively connected and disconnected from an external load. A test load is connected to the battery for a predetermined period of time to draw a current pulse from the battery when the battery is disconnected from the external load. Simultaneously, the voltage of the battery is measured. The measured voltage is converted to a digital signal, and the digital signal is transmitted to a storage means. The stored signal is then transmitted to a visual display device.

REFERENCES:
patent: 3529230 (1970-09-01), Tedd
patent: 4080560 (1978-03-01), Abert
patent: 4377787 (1983-03-01), Kikuoka et al.
patent: 4423378 (1983-12-01), Marino et al.
patent: 4423379 (1983-12-01), Jacobs et al.

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