Abstract: The present disclosure is directed to a battery charger for charging a connected battery pack. The battery charger is capable of determining an impedance characteristic value of the battery pack and adjusting a charging scheme, including an initial and/or subsequent charging rates for the battery pack based on the determined impedance characteristic value. The present disclosure is also directed to a method of charging a battery pack. The method includes determining an impedance characteristic value of the battery pack and adjusting a charging scheme, including an initial and/or subsequent charging rates for the battery pack based on the determined impedance characteristic value.

Abstract: The present disclosure is directed to charging a battery pack by determining a battery pack identification (ID) value from a battery pack identification (ID) component of the battery pack, applying a sinusoidal AC excitation signal to a set of battery cells of the battery pack, calculating an impedance value of the battery pack based on the sinusoidal AC excitation signal, comparing the impedance value of the battery pack to a set of reference impedance values associated with the battery pack ID value, and selecting a charging scheme based on a comparison of the impedance value of the battery pack to the set of reference impedance values associated with the battery pack ID value. The battery pack is charged using the charging scheme.

Abstract: The present disclosure is directed to charging a battery pack by measuring an electrical impedance value of a battery pack by applying a sinusoidal AC excitation signal to a plurality of battery cells of the battery pack, measuring a total impedance value of the battery pack, obtaining a chemical impedance value of the battery pack based on the electrical impedance value and the total impedance value, and adjusting a charge current applied to the battery pack based on the chemical impedance value of the battery pack.

Abstract: A battery pack and charger platform including a voltage coupling circuit comprising an input that receives an input voltage and an output that sends an output voltage, a voltage monitoring circuit having an input coupled to the voltage coupling circuit output and an output, and a power source having an input coupled to the voltage monitoring circuit output, the power source input receives an input voltage representative of a charge instruction.

Abstract: A battery pack charger system includes one or more charging ports for charging one or more removable battery packs. A set of indicators may be arranged on a housing, with a subset of the set of indicators being associated with each charging port. Each subset of indicators may output an indication of a state of charge of a battery pack received in an associated charging port of the charger system. A first indication may indicate that the battery pack is charging. A second indication may indicate that the battery pack has achieved a preset level of charge. A third indication may indicate that the battery pack has achieved a substantially full level of charge.

Abstract: The present disclosure is directed to a battery charger for charging a connected battery pack. The battery charger is capable of determining an impedance characteristic value of the battery pack and adjusting a charging scheme, including an initial and/or subsequent charging rates for the battery pack based on the determined impedance characteristic value. The present disclosure is also directed to a method of charging a battery pack. The method includes determining an impedance characteristic value of the battery pack and adjusting a charging scheme, including an initial and/or subsequent charging rates for the battery pack based on the determined impedance characteristic value.

Abstract: The present disclosure is directed to a battery charger capable of charging a plurality of battery packs. The charger includes the ability to cool electronic components of the charger with a first fan and to cool the battery packs with a set of second fans.

Abstract: The present invention is directed to a battery charger for charging a battery pack. The battery charger includes a plurality of components including a power supply. The battery charger also includes a temperature sensor that senses the temperature of at least one of the plurality of battery charger components, for example a transformer. The battery charger power supply is adjusted based on the temperature of the at least one of the plurality of battery charger components.

Abstract: A battery pack and charger platform including a voltage coupling circuit comprising an input that receives an input voltage and an output that sends an output voltage, a voltage monitoring circuit having an input coupled to the voltage coupling circuit output and an output, and a power source having an input coupled to the voltage monitoring circuit output, the power source input receives an input voltage representative of a charge instruction.

Abstract: A battery pack charger system includes one or more charging ports for charging one or more removable battery packs. A set of indicators may be arranged on a housing, with a subset of the set of indicators being associated with each charging port. Each subset of indicators may output an indication of a state of charge of a battery pack received in an associated charging port of the charger system. A first indication may indicate that the battery pack is charging. A second indication may indicate that the battery pack has achieved a preset level of charge. A third indication may indicate that the battery pack has achieved a substantially full level of charge.

Abstract: A battery pack and charger platform including a voltage coupling circuit comprising an input that receives an input voltage and an output that sends an output voltage, a voltage monitoring circuit having an input coupled to the voltage coupling circuit output and an output, and a power source having an input coupled to the voltage monitoring circuit output, the power source input receives an input voltage representative of a charge instruction.

Abstract: The present disclosure is directed to a battery charger capable of charging a plurality of battery packs. The charger includes the ability to cool electronic components of the charger with a first fan and to cool the battery packs with a set of second fans.

Abstract: A battery pack and charger platform including a voltage coupling circuit comprising an input that receives an input voltage and an output that sends an output voltage, a voltage monitoring circuit having an input coupled to the voltage coupling circuit output and an output, and a power source having an input coupled to the voltage monitoring circuit output, the power source input receives an input voltage representative of a charge instruction.

Abstract: A battery pack and charger platform including a voltage coupling circuit comprising an input that receives an input voltage and an output that sends an output voltage, a voltage monitoring circuit having an input coupled to the voltage coupling circuit output and an output, and a power source having an input coupled to the voltage monitoring circuit output, the power source input receives an input voltage representative of a charge instruction.

Abstract: A battery pack and charger platform including a voltage coupling circuit comprising an input that receives an input voltage and an output that sends an output voltage, a voltage monitoring circuit having an input coupled to the voltage coupling circuit output and an output, and a power source having an input coupled to the voltage monitoring circuit output, the power source input receives an input voltage representative of a charge instruction.

Abstract: A charger and a method for charging a battery pack having a plurality of battery cells is presented. The method includes measuring the voltage of the battery cell(s), comparing the voltage measurement(s) of the cell(s) to a target charge voltage value and if the voltage measurement(s) of the cell(s) is not greater than or equal to the target charge voltage value than setting a current for the battery pack based on the voltage measurement(s) of the cell(s).

Abstract: A battery pack and charger platform including a voltage coupling circuit comprising an input that receives an input voltage and an output that sends an output voltage, a voltage monitoring circuit having an input coupled to the voltage coupling circuit output and an output, and a power source having an input coupled to the voltage monitoring circuit output, the power source input receives an input voltage representative of a charge instruction.

Abstract: The present invention is directed to a battery charger for charging a battery pack. The battery charger includes a plurality of components including a power supply. The battery charger also includes a temperature sensor that senses the temperature of at least one of the plurality of battery charger components, for example a transformer. The battery charger power supply is adjusted based on the temperature of the at least one of the plurality of battery charger components.

Abstract: A battery pack and charger platform including a voltage coupling circuit comprising an input that receives an input voltage and an output that sends an output voltage, a voltage monitoring circuit having an input coupled to the voltage coupling circuit output and an output, and a power source having an input coupled to the voltage monitoring circuit output, the power source input receives an input voltage representative of a charge instruction.

Abstract: A method is provided for indicating state of charge of a battery being charged by a charger. The method includes: supplying a charging current from a battery charger to a battery pack; determining voltage of battery cells residing in the battery pack; and illuminating a visual indicator on the battery charger to indicate state of charge of the battery pack, where brightness of the visual indicator correlates to the voltage of the battery cells in the battery pack.