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Dynamic Rechargeable Battery End-Of-Life Prediction Disclosure Number: IPCOM000061061D
Original Publication Date: 1986-Jun-01
Included in the Prior Art Database: 2005-Mar-09

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Balliet, L Kraus, R Langer, P [+details]


This article describes a diagnostic technique and apparatus for predicting present charge status and end-of-life for nickel cadmium or similar rechargeable batteries. Rechargeable batteries can be used in portable computers as well as many other processor- and microprocessor-based equipment. In general, however, the life of batteries, including rechargeable batteries, has been considerably less than other electronic components. In computers especially, it is highly desirable to maximize this life and predict in advance when replacement is advisable. With dependable end-of-life prediction, important data can be retained in keep-alive memories, etc., that would not otherwise be practical. Known rechargeable battery diagnostic methods and apparatus have dealt with lead acid batteries, typically as applied to use in automobiles.