Are there batteries smaller than AAA?

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2. What is the full form of AAAA?
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5. Why is there no A or B Battery?
6. Do Duracell batteries last longer?
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8. What uses a 23a 12v battery?
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Tags

1. #grams
2. #voltage
3. #diameter
4. #typical
5. #battery
6. #measuring
7. #nominal
8. #shorter
9. #weight
10. #somewhat
11. #cylindrical
12. #device