Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent
1997-07-25
1998-06-02
Do, Diep N.
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
324104, 429 93, 359273, G01N 27416, H01M 1048
Patent
active
057605882
ABSTRACT:
The thermochromic battery tester comprises a conductive heating element having one end including at least two switch pads for selective coupling of the conductive heating element to a second terminal of the battery. Each of the switch pads provides a different resistivity for the heating element when pressed, to thereby change the calibration of the tester for different discharge rates. The battery tester further includes discharge rate calibration indicia associated with each of the switch pads for indicating which switch pad to press for proper calibration at a relative rate of discharge. The conductive heating element may have at least a portion thereof made of a variable resistivity material having a resistivity that changes in response to ambient temperature so as to compensate for varying ambient temperatures. Preferably, the variable resistivity material has a resistivity that increases as ambient temperature increases.
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Do Diep N.
Eveready Battery Company Inc.
Welsh Robert W.
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