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The Exell Battery A21PX 4.5V Alkaline Battery is a 600 mAh alkaline replacement battery for the ANSI/NEDA 1306A most commonly found in cameras, garage door openers, and computers. It is a flat top battery and is assembled in the USA.
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Also Known As: 1306AP, 3LR50, 523, 6135-99-114-1239, A21, Mallory TR133, A21PX, A133, APX21, BA-1098/U, EN133A, EPX21, PC133A, PX21, RPX21, V21PX