H - Electricity – 02 – J
Patent
H - Electricity
02
J
H02J 7/00 (2006.01) B25F 5/00 (2006.01)
Patent
CA 2680965
A rechargeable battery pack for a power tool can have a data terminal that provides a signal that is indicative of whether the voltage is below a threshold and can serve as both a pre-charge signal for a charger and as a stop- discharge signal for a power tool. A charger can include a power supply circuit and a voltage detection circuit. A charger control module can receive a signal indicative of the voltage of the battery pack and determine a pre-charge time based on the voltage and can monitor a change in the voltage of the battery pack during the pre-charge operation and stop the pre-charge operation based on the change in voltage and the time period.
Aydin Tarek
Cruise Nathan
Flaharty Keith D.
Phillips Steven J.
Qin Fugen
Black & Decker Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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