Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent
1991-04-30
1993-03-02
Harvey, Jack B.
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
320 48, 340636, G01N 2702
Patent
active
051912910
ABSTRACT:
A constant current load is cyclically applied to the battery terminals for about one minute, each load portion of the cycles having a current approximately equal to the rated ampere hour load of the battery and having a duration of about 34 milliseconds in which the load is connected for about 17 milliseconds and disconnected for an equal period. The load current is approximately equal to the rated ampere load of the battery under test. An output indicator denotes the final terminal voltage under load as a percentage of a reference voltage equal to the terminal voltage of an ideal battery of the same kind when fully charged and first subjected to a load equal to the load used in the testing procedure. A battery with an output indication between 90 and 110 is deemed to be acceptable. A lower reading indicates the battery is either undercharged or defective.
REFERENCES:
patent: 3876931 (1975-04-01), Godshalk
patent: 4275351 (1981-06-01), Harer et al.
patent: 4316133 (1982-02-01), Locke, Jr.
patent: 4943777 (1990-07-01), Nakamura et al.
patent: 4972181 (1990-11-01), Fiene
Barrett E. T.
Harvey Jack B.
Regan Maura K.
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