Replacement Batteries For Power Tools

power tools
(power tool) a tool driven by a motor
Used widely in the construction industry, power tools are powered by electric motors, petrol or diesel or via a compressed air motor. There are two classifications of power tools, either stationary or hand-held ‘portables’. Stationary tools are known for their speed of operation and power.

replacement
refilling: filling again by supplying what has been used up
The action or process of replacing someone or something
A person or thing that takes the place of another
substitution: an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood"
the act of furnishing an equivalent person or thing in the place of another; "replacing the star will not be easy"

batteries
(battery) group of guns or missile launchers operated together at one place
A fortified emplacement for heavy guns
(a battery) the battery used to heat the filaments of a vacuum tube
(battery) a device that produces electricity; may have several primary or secondary cells arranged in parallel or series
A container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power
An artillery subunit of guns, men, and vehicles