Black Decker Inc.

Regina G C Cunanan

Geoffrey Stephen Howard

Brian K Wohltmann

Daniel Joseph White

Bhanuprasad V Gorti

Frank J Delose

Aziz Iqbal

Michael Cruz

Matthew J Velderman

Dustin M Lee

Matt J Velderman

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.

Battery pack and charger platform for power tool systems including battery pack identification scheme

A method is provided for identifying a battery pack that is operably coupled to a battery charger. The method comprises: measuring voltage at a plurality of designated terminals of a first battery pack while the battery pack is coupled to the battery charger; determining how many of the designated terminals are connected to a reference voltage, such as battery positive; and identifying an attribute of the battery pack based on how many of the designated terminals are connected to the reference voltage.

Battery pack

Battery pack identification scheme for power tool systems

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).

Charger and method for charging a battery pack

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.

State of charge indicator for a battery charger

Growing community of inventors

Baltimore, MD, United States of America

Regina G C Cunanan