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Secondary Batteries

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Batteries are essential for the wireless heart monitors to operate. A battery is composed of electrochemical cells that convert stored chemical energy to electrical energy and consists of a cathode (the positive terminal) and an anode (the negative terminal). The battery needs to connect to the external circuits of the wireless heart monitor, and electrolytes move and cause the electrolytes to act as ions and preform work. There are two ways in which batteries can behave: a primary and a secondary battery. Primary batteries are disposable after one use and secondary batteries can be reused after being charges. In primary batteries once the electrodes have changed during battery use, they cannot b0e changed back. Secondary batteries can be recharged, and the initial make-up of the electrodes can be changed by a reverse-current. Primary batteries are mainly used in devices that require low amounts of energy and are not left on perpetually. Secondary batteries are best suited to devices that are constantly used such as hearing aids and car batteries[1]. …show more content…

Alkaline batteries are usually used for flashlights and headphones. Lead-acid are usually used for cars and some of the older generations of this battery contains liquid electrolyte in an open container. It must be kept upright of make sure that the dispersion of hydrogen gas is safe if undergoing overcharging. The lead-acid battery is incredibly heavy on comparison to the amount of energy that is given off. Closed valve-regulated lead-acid battery, is also commonly used in modern cars. Two types of these closed batteries can be found: Gel batteries and Absorbed Glass

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