A battery pack includes a battery cell holder, where the battery cell holder includes multiple frames with each of the frames defining a cavity and adjacent frames connected to each other. The battery pack includes at least one pouch battery cell disposed ...

A wrench including a tool head including a tool output member. The wrench also includes a motor configured to selectively drive the output member and a battery assembly. The battery assembly includes a battery cell and the battery cell provides power to th...

A battery pack that is configured to provide electrical power to an electric motor is provided. The battery pack includes a battery pack housing, a cell holder subassembly received in the battery pack housing, and a plurality of tabless cylindrical battery...

A tool is provided including a motor powered by a battery, a power switch circuit, and a controller that controls the power switch circuit using a multi-phase trapezoidal commutation scheme including at least six commutation sectors for each rotation of th...

A battery pack includes a set of blocks of battery cells, where each of the blocks is connected in series, and a set of AC impedance circuits, where each of the AC impedance circuits is electrically connected to at least one of the blocks of battery cells ...

A cordless compressor has an air storage tank, a pump, a motor for driving the pump, and a controller circuit electrically connected to the motor. A pressure switch assembly is connected to the controller circuit. The pressure switch assembly has first and...