A battery monitor is provided for use with a battery of an automotive vehicle. The battery monitor can provide real time battery condition measurements and can selectively control the charging of the battery through an alternator of the vehicle based upon the measured battery condition.

Energy management system for automotive vehicle

An electronic battery tester for testing a storage battery includes test circuitry configured to provide an output based upon a selected test criteria. Additionally, circuitry is provided to assist in balancing batteries used in a string of multiple batteries.

Electronic battery tester

An automotive vehicle electrical system diagnostic apparatus includes first and second electrical connections configured to electrically couple to an electrical system of an automotive vehicle which includes a battery. Digital samples are obtained during operation of the vehicle which are related to the system. The digital samples are stored in memory.

Automotive vehicle electrical system diagnostic device

A storage battery includes a battery housing and a plurality of electrochemical cells in the battery housing electrically connected to terminals of the battery. A battery test module is mounted to the battery housing and electrically coupled to the terminals through Kelvin connections. A display or other output is configured to output battery condition information from the battery test module. The battery test module is configured to automatically carry out a battery test when a voltage across the battery falls below a predetermined threshold.

Battery test module

An electronic battery tester for testing a storage battery includes test circuitry configured to provide a battery test output related to a condition of the battery A memory stores a battery tester address of the battery tester, and communication circuitry transmits the battery test output formatted with the battery tester address on a communication link to a remote location

Electronic battery tester with network communication

The net resistance of a circuit for utilizing an electrochemical cell is reduced by inserting negative resistance in the circuit that is slightly less than the inherent resistance of the cell, and means are provided for automatically adjusting the amount of negative resistance in response to the inherent resistance of the cell employed.

Raymond B. Stelting

Papers

Resistance neutralizing system for electrochemical devices

Termination for an ultrasonic transducer