Patent ID: 11936228
Assignee: BLACK & DECKER, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC H

Claim 4:
5. The battery charger, as recited in claim 1, wherein the charger controller includes a first reference impedance value, a second reference impedance value and a third reference impedance value and wherein if the impedance value calculated by the charger controller is greater than or equal to the first reference impedance value and less than the second reference impedance value the charger controller selects a maximum charging rate charging scheme to charge the connected battery pack and if the impedance value calculated by the charger controller is greater than or equal to the second reference impedance value and less than the third reference impedance value the charger controller selects a charging rate charging scheme that is less than the maximum charging rate charging scheme to charge the connected battery pack and if the impedance value calculated by the charger controller is greater than or equal to the third reference impedance value the charger controller selects a do not charge charging scheme to charge the connected battery pack.