Abstract: A battery maintenance tool, which electrically couples to a battery, includes a maintenance tool housing and electronic circuitry within the maintenance tool housing. A cable, substantially external to the maintenance tool housing includes a plurality of conductors. At least some conductors of the plurality conductors are configured to electrically couple to the electronic circuitry within the maintenance tool housing. At least one probe light that is configured to electrically couple to at least two of the plurality of conductors in the cable is also included. The probe light, which is separate from the maintenance tool housing, receives power via the at least two of the plurality of conductors to which it is electrically coupled.

Abstract: An alternator tester is provided for testing an alternator of a vehicle while the alternator is coupled to the vehicle. A sensor is configured to couple to the vehicle and sense a signal related to operation of the alternator. A memory contains data related to operator instructions for performing an alternator tester of a function of vehicle type. A processor configured to provide an output indication of alternator condition based upon the sensed signal. An extra load or connection can be provided for coupling to the electrical system.

Abstract: An apparatus for measuring electrical parameters for an electrical system measures a first and second parameters of the electrical system between connections to the electrical system. A processor determines a third electrical parameter of the electrical system as a function of the first parameter and the second parameter.

Abstract: 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.

Abstract: 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.

Abstract: A broad-band technique for reducing the distributed inductance of a four-conductor Kelvin cable is disclosed. A special inductance-canceling cable section is connected in tandem with the cable section contacting the cell/battery. Connections between the two cable sections are transposed such that conductors in each conductor pair of the canceling section connect to current-carrying and voltage-sensing conductors from different conductor pairs in the contacting section. The canceling section thereby exhibits a distributed negative mutual inductance between its current-carrying and voltage-sensing conductors that can effectively cancel the distributed positive mutual inductance introduced by the contacting section. In one embodiment, conductor pairs comprise pairs of insulated wires which may be twisted together. In other disclosed embodiments, conductor pairs comprise shielded coaxial cables.

Abstract: An electronic battery tester for testing a storage battery determines a condition of the battery. The condition is a relative condition and is a function of a dynamic parameter of the battery and an empirical input variable.

Abstract: An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined based upon one or more responses to one or more queries provided to an operator. The responses are used to determine battery type.

Abstract: 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.

Abstract: An electronic vehicle tester includes a battery tester configured to measure a parameter of a battery of a vehicle. A tire tester is configured to receive a parameter of a tire of the vehicle. A wireless receiver can be configured to receive pressure information from a transmitter associated with a tire of a vehicle.

Abstract: Methods and systems are provided for monitoring replacing of a previously purchased storage battery with a replacement storage battery. A battery tester is coupled to the replacement storage battery. A replacement storage battery identifier is entered into the battery tester that identifies the replacement storage battery. The battery tester performs a battery test on the replacement storage battery. A replacement battery test code is generated using the battery test and the replacement storage battery identifier. The replacement battery test code is communicated to a centralized database. The replacement battery test code is associated with a battery test code related to the previously purchased storage battery in the centralized database.

Abstract: A battery tester that is capable of calculating its own reference values is provided. The battery tester includes test circuitry that is configured to obtain dynamic parameter values for batteries, and to compute at least one reference value based on the dynamic parameter values.

Abstract: A broad-band technique for reducing the distributed inductance of a four-conductor Kelvin cable is disclosed. A special inductance-canceling cable section is connected in tandem with the cable section contacting the cell/battery. Connections between the two cable sections are transposed such that conductors in each conductor pair of the canceling section connect to current-carrying and voltage-sensing conductors from different conductor pairs in the contacting section. The canceling section thereby exhibits a distributed negative mutual inductance between its current-carrying and voltage-sensing conductors that can effectively cancel the distributed positive mutual inductance introduced by the contacting section. In one embodiment, conductor pairs comprise pairs of insulated wires which may be twisted together. In other disclosed embodiments, conductor pairs comprise shielded coaxial cables.

Abstract: An electronic battery tester and method includes generating battery test data from an electronic battery test. The battery test data is transmitted over a wireless communication medium. In another aspect, a method and apparatus is provided for receiving battery test data from a wireless communication medium. Also, a diagnostic battery charger, which is capable of transmitting battery condition information to an external receiver, is provided.

Abstract: An electronic battery tester for testing a storage battery includes a first and a second electrical connector configured to electrically couple to terminals of the storage battery. Measurement circuitry tests the storage battery and generate a battery test result. OBD communication circuitry provides an OBD output signal in accordance with an OBD communication standard related to the battery test result. An OBD connector is configured to couple to an OBD compliant automotive vehicle scan tool.

Abstract: An apparatus and method for preventing theft in automotive vehicle service centers. A transmitter transmits a wireless security signal which defines a perimeter. At least one portable tool for use in automotive vehicle service centers includes a receiver configured to receive a transmitted security signal. Security circuitry is actuated if the tool is outside the perimeter defined by the security signal.

Abstract: An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined based upon one or more responses to one or more queries provided to an operator. The responses are used to determine battery type.

Abstract: An electronic battery tester or charger for use with a storage battery includes a first and a second electrical connector configured to electrically couple to terminals of the storage battery. Circuitry operates on the storage battery. OBD communication circuitry is configured to couple to an OBD databus of a vehicle. The operation of the circuitry is a function of communication on the OBD databus.

Abstract: A battery charger with an automatic customer notification system is provided. The battery charger includes battery charging circuitry which is configured to couple to a battery, and to provide a charging signal to the battery. The battery charger also includes communication circuitry, coupled to the charging circuitry, that is configured to transmit a signal to an external device upon receipt of a charge status code form the battery charging circuitry.

Abstract: An apparatus and method for supplying energy to a vehicle battery is provided. The apparatus includes a positive connector that couples to a positive terminal of the vehicle battery and a negative connector that couples to a negative terminal of the vehicle battery. A battery charger applies a charge signal to the vehicle battery through the positive and negative connectors to thereby charge the vehicle battery. A jump-start booster pack, coupled to the battery charger, can optionally provide starting energy to the vehicle battery through the positive and negative connectors. The booster pack can be charged by the charge signal. In one aspect, the battery charger is a switch-mode charger.