Batteries BATTERY TERMINOLOGYBATTERY TERMINOLOGYBatteries are used for a wide variety of services throughout technology today. Tobegin to study battery operation and characteristics, a few terms that are usedwith batteries must be understood.EO 1.1 DEFINE the following terms as they relate tobatteries and voltaic cells:a. Voltaic cellb. Batteryc. Electroded. Electrolytee. Specific gravityf. Ampere-HourVoltaicCellThe term voltaic cell is defined as a combination of materials used to convert chemical energyinto electrical energy. A voltaic or chemical cell consists of two electrodes made of differenttypes of metals or metallic compounds placed in an electrolyte solution.BatteryA battery is a group of two or more connected voltaic cells.ElectrodeAn electrode is a metallic compound, or metal, which has an abundance of electrons (negativeelectrode) or an abundance of positive charges (positive electrode).ElectrolyteAn electrolyte is a solution which is capable of conducting an electric current. The electrolyteof a cell may be a liquid or a paste. If the electrolyte is a paste, the cell is referred to as a drycell; if the electrolyte is a solution, it is called a wet cell.SpecificGravitySpecific gravity is defined as the ratio comparing the weight of any liquid to the weight of anequal volume of water. The specific gravity of pure water is 1.000. Lead-acid batteries use anelectrolyte which contains sulfuric acid. Pure sulfuric acid has a specific gravity of 1.835, sinceit weighs 1.835 times as much as pure water per unit volume.Rev. 0 Page 1 ES-04
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