Method of Indicating the State of Charge of a Battery.
Patent Application, Filed 2 Aug 88,
DEPARTMENT OF THE ARMY WASHINGTON DC
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The general object of this invention is to provide a simple and economic method of determining the state of charge of a battery. A more particular object of the invention is to provide such a method where the battery is one that shows a constant open circuit andor load potential until the battery is nearly used up. A particular object of the invention is to provide such a method for a lithium battery. The method uses the operation of a LED clock, which is very inexpensive and can run off a tiny fraction of current supplied by the battery itself. For a particular battery and piece of equipment, one knows the expected battery capacity or lifetime and therefore is able to gauge when replacement is necessary. Patent applications. JES
- Electrochemical Energy Storage
- Test Facilities, Equipment and Methods