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US 6,323,650 B1Granted
Electronic battery tester
AssigneeMidtronics, Inc.
InventorsKevin I. Bertness, Jamey Butteris
Life of this patent
Estimating the term…
Abstract
An electronic battery tester includes a calibration interface. A microprocessor is configured to calibrate the battery tester by coupling to a calibrator through the calibration interface.
Claims40
An electronic battery tester for testing a storage battery, comprising:
- a first pair of connectors configured to couple to a positive terminal of the battery;
- a second pair of connectors configured to couple to a negative terminal of the battery, the first and second pairs of connectors forming a Kelvin connection with the battery;
- a memory;
- a calibration interface configured to provide a calibrator control output to a calibrator;
- a microprocessor configured to test the battery through the Kelvin connection based upon a calibration value stored in the memory, the microprocessor further configured to communicate with the calibrator through the calibration interface to initiate a self calibration, measure a calibrated value of the calibrator through the Kelvin connection and store the measured calibrator value in memory as the calibration value.
2 more elements
The electronic battery tester of claim 11 wherein a programming mode is entered during power-up of the microprocessor.
An electronic battery tester for testing a storage battery, comprising:
- a first pair of connectors configured to couple to a positive terminal of the battery;
- a second pair of connectors configured to couple to a negative terminal of the battery, the first and second pairs of connectors forming a Kelvin connection with the battery;
- a memory;
- a microprocessor configured to test the battery through the Kelvin connection based upon an industry standard battery rating;
- and
- a user input configured to select an industry standard rating system for the battery rating and store the selected rating system in the memory.
3 more elements
An electronic battery tester for testing a storage battery, comprising:
- a first pair of connectors configured to couple to a positive terminal of the battery;
- a second pair of connectors configured to couple to a negative terminal of the battery, the first and second pairs of connectors forming a Kelvin connection with the battery;
- a memory;
- a microprocessor configured to test the battery through the Kelvin connection based upon a battery rating;
- and
- a user input configured to select an increment or decrement value for use in entering the battery rating and store the value in the memory.
3 more elements
A battery tester calibrator, comprising:
- a control input configured to receive a control input from an electronic battery tester;
- a Kelvin connection coupling configured to couple to a Kelvin connection of the battery tester;
- a voltage reference;
- a resistance reference;
- at least one switch configured to selectively couple the voltage and resistance references to the Kelvin connection coupling in respective first and second relay positions in response to the control input.
2 more elements
Dependencies are inferred from the claim text.