Definition of AA battery
: a battery that is typically used in small electronic devices and that is standardized at 51 mm in length and roughly 14 mm in diameter
— called also AA, AA cell, double-A, double-A battery
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“AA battery.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/AA%20battery. Accessed 11 May. 2021.
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Time Traveler for AA battery
The first known use of AA battery was in 1961
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