A battery part is an essential component of a battery, which is a device that stores energy and converts it into electrical energy. An ANODE is a positively charged ELECTRODE in a battery, which is five letters long. A TEST is a procedure used to determine the quality or performance of a battery, which is four letters long. A POLE is a metal rod that connects two electrodes in a battery, which is also four letters long. An ELECTRODE is a conductor through which electricity enters or leaves a battery, which is nine letters long. A CELL is a single unit of a battery, which is four letters long. A GRID is a network of metal bars that hold the electrodes in a battery, which is also four letters long. A CATCHER is a device that collects and stores the gas produced by a battery, which is seven letters long. An acidcell is a type of battery that uses an acid electrolyte, which is eight letters long.