The difference between AA and AAA battery: AAA battery is smaller in size than AA battery. Energy storing capacity is proportional to the size of the battery. So even both batteries could give same voltage, AA battery will give it that output for a long time.
Correspondingly, what battery is smaller than a AAA?
An A23 battery is cylindrical and slightly shorter than a AAA battery, measuring 28.5 mm long and 10.3 mm in diameter, with a typical weight of 8 grams. An A23 battery is an 8-cell device with a nominal voltage of 12 V.
What is the capacity of a AAA battery?
|Battery Type||Capacity (mAh)||Typical Drain (mA)|
What is D size battery?
This effect is generally less pronounced in cells with NiCd and NiMH chemistries; see Peukert's law. Many commonly available size D rechargeable cells are actually sub-C cells in a D-sized holder. D batteries have: Nominal diameter of 33.2 ± 1 millimeters (1.3 inches).