04968941 is referenced by 161 patents and cites 7 patents.

An apparatus for monitoring the state of charge of a battery having a shunt resistor connected in series with a battery and an integrating circuit connected across the terminals of the shunt resistor is provided. The integrating circuit includes a Memoriode having a large capacitance and the capability to store charge for long periods of time, so that the integration can be performed along the same curve even if power to the integrating circuit is interrupted.

Title
Apparatus for monitoring the state of charge of a battery
Application Number
7/218539
Publication Number
4968941
Application Date
July 13, 1988
Publication Date
November 6, 1990
Inventor
Wesley A Rogers
707 Balfour, Grosse Pointe Park, 48236
MI, US
Agent
Davis Hoxie Faithfull & Hapgood
IPC
G01N 27/46
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