16 - 18 volt batteries, most now come with lithium battieries which
are lighter and have more lasting power, other drills are corded
DETAIL:
A reciprocating saw is a type of saw in which the cutting action is achieved through a push and pull reciprocating motion of the blade. The term reciprocating saw is commonly assigned to a type of saw used in construction and demolition work. This type of saw, also known as a recipro saw, Sabre Saw, or Sawzall.