Power Tool Battery

power tool
a tool driven by a motor
A power tool is a tool powered by an electric motor, a compressed air motor, an internal combustion engine, direct burning of fuels and propellants, or even natural power sources like wind or moving water.

battery
A container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power
a device that produces electricity; may have several primary or secondary cells arranged in parallel or series
a collection of related things intended for use together; "took a battery of achievement tests"
A fortified emplacement for heavy guns
group of guns or missile launchers operated together at one place
An artillery subunit of guns, men, and vehicles