Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent
1998-02-23
2000-08-01
Ballato, Josie
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
324427, 324430, G01N 27416
Patent
active
060971932
ABSTRACT:
A vehicle starting battery cold-cranking amps meter and associated method includes providing a current source, a voltage meter, a current meter and a control. The current source produces a current pulse during a brief time interval at a known magnitude that is less than rated cold-cranking amps of the vehicle starting battery being tested. The volt meter measures battery terminal voltage of the vehicle storage battery being tested while the current source is sourcing current to or sinking current from the vehicle starting battery being tested. The control determines internal impedance of the vehicle starting battery being tested from the terminal voltage of the vehicle starting battery while the current source is sourcing current to or sinking current from the vehicle starting battery being tested and determines cold-cranking amps from the internal impedance and an output of the temperature meter.
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Ballato Josie
Madill Technologies, Inc.
Sundaram T. R.
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