An apparatus for diagnosing an insulation condition between a battery pack and the ground includes a first resistor element electrically connected between a positive terminal of the battery pack and the ground, and a control circuit. The control circuit records a current flowing through the first test port as a first test current, while a high-level voltage is being applied between the positive terminal and the ground. The controller diagnoses the insulation condition between the battery pack and the ground, based on the first test current.

An apparatus for diagnosing an insulation condition between a battery pack and the ground includes a first resistor element electrically connected between a positive terminal of the battery pack and the ground, and a control circuit. The control circuit records a current flowing through the first test port as a first test current, while a high-level voltage is being applied between the positive terminal and the ground. The controller diagnoses the insulation condition between the battery pack and the ground, based on the first test current.

Methods, apparatus, systems and articles of manufacture are described for a wireless battery system. An example apparatus includes at least one memory, instructions, and processor circuitry to at least one of instantiate or execute the instructions to identify a first battery node to transmit an uplink command during a first superframe interval, transmit a downlink command to the first battery node and a second battery node, the first battery node to switch in the first superframe interval from a receive state to a transmit state in response to the downlink command, the first battery node to transmit the uplink command in the transmit state, and receive the uplink command from the first battery node in the first superframe interval.

A monitoring system includes a capacitor can having one or more capacitors. The monitoring system includes an antenna. The monitoring system includes at least one sensor disposed within the capacitor can and configured to detect an operating characteristic associated with health of the one or more capacitors of the capacitor can. The monitoring system includes a processor configured to receive a first signal from the at least one sensor indicative of the operating characteristic. The processor is configured to send a second signal, via the antenna, indicative of a value of the operating characteristic to a receiving device outside of the capacitor can.

A system a vehicle battery tester configured to test at least one condition of a vehicle battery and to transmit battery condition information relating to the at least one condition of the vehicle battery to a server. The system also includes the server, which is configured to receive the battery condition information from the vehicle battery tester and to transmit, to a consumer, a report generated based at least in part on the battery condition information

A pluggable state-of-charge (SOC) indicator and methods of use are disclosed. The pluggable SOC indicator includes at least one voltage input jack for connecting to a battery, at least one instance of control electronics, and at least one SOC indicator, such as a 5-bar liquid crystal display (LCD). Embodiments of the pluggable SOC indicator include, but are not limited to, a pluggable single-connector SOC indicator, a pluggable dual-connector SOC indicator, a pluggable tri-connector SOC indicator, and a pluggable quad-connector SOC indicator. Further, the control electronics are programmable for any input voltage range and/or battery discharge characteristics.

A pluggable state-of-charge (SOC) indicator and methods of use are disclosed. The pluggable SOC indicator includes at least one voltage input jack for connecting to a battery, at least one instance of control electronics, and at least one SOC indicator, such as a 5-bar liquid crystal display (LCD). Embodiments of the pluggable SOC indicator include, but are not limited to, a pluggable single-connector SOC indicator, a pluggable dual-connector SOC indicator, a pluggable tri-connector SOC indicator, and a pluggable quad-connector SOC indicator. Further, the control electronics are programmable for any input voltage range and/or battery discharge characteristics.

A battery characterization system includes a drive-sense circuit (DSC), memory that stores operational instructions, and processing module(s) operably coupled to the DSC and the memory. Based on a reference signal, the DSC generates a charge signal, which includes an AC (alternating current) component, and provides the charge signal to a terminal of a battery via a single line and simultaneously to senses the charge signal via the single line to detect an electrical characteristic of the battery based on a response of the battery. The DSC generates a digital signal representative of the electrical characteristic of the battery. The processing module(s), based on the operational instructions, generate the reference signal to include a frequency sweep of the AC component of the charge signal (e.g., different frequencies at different times or multiple frequencies simultaneously) and processes the digital signal to characterize the battery across the different respective frequencies and generate spectrum analysis (SA) information of the battery.

A battery characterization system includes a drive-sense circuit (DSC), memory that stores operational instructions, and processing module(s) operably coupled to the DSC and the memory. Based on a reference signal, the DSC generates a charge signal, which includes an AC (alternating current) component, and provides the charge signal to a terminal of a battery via a single line and simultaneously to senses the charge signal via the single line to detect an electrical characteristic of the battery based on a response of the battery. The DSC generates a digital signal representative of the electrical characteristic of the battery. The processing module(s), based on the operational instructions, generate the reference signal to include a frequency sweep of the AC component of the charge signal (e.g., different frequencies at different times or multiple frequencies simultaneously) and processes the digital signal to characterize the battery across the different respective frequencies and generate spectrum analysis (SA) information of the battery.

A method for estimating a battery power percentage of a battery includes: performing a first fuel gauge operation upon the battery; and using the first fuel gauge operation to generate the battery power percentage of the battery by referring to information measured by a second fuel gauge operation performed upon the battery wherein the second fuel gauge operation is different from the first fuel gauge operation.