Abstract: A method for conducting an operation including a power tool battery pack. The battery pack can include a housing, a first cell supported by the housing and having a voltage, and a second cell supported by the housing and having a voltage. The battery pack also can be connectable to a power tool and be operable to supply power to operate the power tool. The method can include discharging one of the first cell and the second cell until the voltage of the one of the first cell and the second cell is substantially equal to the voltage of the other of the first cell and the second cell.

Abstract: A battery pack that is configured to be coupled to an electrical device comprises a housing, at least one battery cell positioned in the housing, and a terminal assembly configured to electrically connect the battery cell to the electrical device. The battery pack also includes a locking assembly that is configured to engage the electrical device. The locking assembly includes a locking member, an actuator coupled to the locking member, and a biasing member. The locking member is movable about a pivot point between a first position to engage the electrical device and a second position. The actuator is actuatable to move the locking member from the first position to the second position. The biasing member biases the locking member to the first position.

Abstract: A system and method for battery protection. In some aspects, a battery pack includes a housing, a cell supported by the housing, a circuit supported by the housing and operable to control a function of the battery pack, and a heat sink in heat transfer relationship with the circuit and operable to dissipate heat from the circuit.

Abstract: A method and system for battery protection. In some aspects, a battery pack configured to be interfaced with a power tool includes a housing, a cell, a controller, and a circuit. The circuit is operable to enable the controller to operate when the voltage supplied by the cell to the controller is below an operating voltage threshold off the controller.

Abstract: A system and method for battery protection. In some aspects, a power tool battery pack operable to supply power to a power tool includes a controller. The controller is operable to sample a battery pack condition in at least a first sampling mode and a second sampling mode to produce a plurality of measurements. The controller is further operable to average the plurality of measurements to produce an averaged measurement, and operable to modify operation of the battery pack when the averaged measurement is outside a specified range.

Abstract: An electrical combination including a driver drill capable of producing an average current draw of approximately 20-amps, a circular saw capable of producing an average current draw of approximately 20-amps, and a power tool battery pack operable to supply power to the driver drill and to the circular saw, the battery pack including a plurality of battery cells, the plurality of battery cells each having a lithium-based chemistry.

Abstract: A battery pack for powering a cordless power tool. The battery pack includes at least one battery cell operable to supply a discharge current, a switch operable to control the discharge current and a protection device to protect the switch. The protection device is positioned such that the device absorbs a current traveling in a direction opposite to that of the discharge current supplied from the battery cell.

Abstract: A power tool including a body housing a motor and a drive mechanism driven by the motor, the drive mechanism being operable to drive a tool element, the body including a support portion, a battery electrically connectable with the motor such that the battery selectively supplies power to the motor, the battery including an adapter support portion connectable to the body support portion along an adapter attachment axis, one of the support portion of the body and the adapter support portion of the battery including a track and a ramp positioned along the track and angled with respect to the attachment axis, and an other of the support portion of the body and the adapter support portion of the battery including a protrusion engageable with the track to connect the battery to the body and engageable with the ramp.

Abstract: A system and method for battery protection. In some aspects, a method of a method for operating a battery pack. The battery pack having a battery pack condition, and the battery pack condition having a range. The method including the acts of conducting an operation including the battery pack, measuring a first measurement of the battery pack condition, measuring a second measurement of the battery pack condition, averaging the first measurement and the second measurement to provide an average measurement and if the average measurement is within the range, continuing the operation including the battery pack. At least one of the first measurement and the second measurement being outside of the range.

Abstract: A system and method for battery protection. In some aspects, a battery pack including a housing, a cell supported by the housing and power being transferable between the cell and an electrical device, a circuit supported by the housing and operable to control a function of the battery pack, and a heat sink in heat transfer relationship with the circuit and operable to dissipate heat from the circuit.

Abstract: A system and method for battery protection. In some aspects, a method of conducting an operation including a battery pack, includes the acts of monitoring a first battery pack condition at a first monitoring rate, determining when a second battery pack condition reaches a threshold, after the second battery pack condition reaches the threshold, monitoring the first battery pack condition at a second monitoring rate, the second monitoring rate being different than the first monitoring rate.

Abstract: A power tool, such as a band saw, is provided and may include a housing having a first handle and a second handle, a motor, a first wheel, a second wheel and a battery supported by the housing and electrically connectable to the motor for powering the motor, the battery is at least partially positioned at least one of between the first handle and the second handle and between a first wheel axis of the first wheel and a second wheel axis of the second wheel. In some aspects, a power tool may include a battery support for supporting a battery, the battery support being formed separately from a housing of the band saw and being supportable by the housing. In other aspects, a band saw may be operable with at least a 26 Volt battery.

Abstract: A system and method for battery protection. In some aspects, a method of conducting an operation including a battery pack, includes the acts of monitoring a first battery pack condition at a first monitoring rate, determining when a second battery pack condition reaches a threshold, after the second battery pack condition reaches the threshold, monitoring the first battery pack condition at a second monitoring rate, the second monitoring rate being different than the first monitoring rate.