04949046 is referenced by 161 patents and cites 17 patents.

A device for indicating changes in the state of charge of a rechargeable battery including a current sensor to sense current flow into and out of the battery and to provide an output indicative of both the magnitude and direction of the current flow, a timer to provide a timing signal, and a computer programmed to compute from the output of the current sensor and the timer, a signal representative of the charge dissipated from or accumulated in the battery over a period of time. Preferably the device includes data storage to store an indicatioin of the state of charge of the battery and the computer is programmed to use the signal to update the stored data to provide an indication of the current state of charge of the battery.

Title
Battery state of charge indicator
Application Number
932144
Publication Number
4949046
Application Date
June 21, 1988
Publication Date
August 14, 1990
Inventor
George R Seyfang
Lancashire
GB
Agent
Cushman Darby & Cushman
Assignee
British Aerospace Public Company
GB
IPC
G01N 27/46
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