Perhaps no device has undergone such continual evolution and development in the last 50 years as the portable primary power source - the battery. Portability, miniaturization and computerization in electronic devices have driven a good deal of this change. Common applications now include power source and memory backup for computers, cell phones,rnremote controls, cameras, control/assist in automotive, utility meters, dataloggers, emergency tracking systems, security systems, RFID tags, and defibrillators, as well as other sophisticated medical and military applications.
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