First of all, the 18650 lithium-ion battery, the one with the highest capacity is Panasonic's battery, which can reach 3400 mah. This type of battery costs twenty or thirty yuan each, which is the highest capacity in the industry. There is a 99% chance that the Shenhuo 18650 you purchased has an inflated capacity and is a fake.
AA batteries are the standard for dry cell batteries in the United States. AA batteries from mainland China are compatible with this standard, so AA batteries are also called AA batteries.
The AAA battery is an American dry battery standard. It is compatible with mainland China AA battery or Taiwan AA battery standard. This is a common battery and it is smaller than AA battery, so AA battery also called AAA battery.
AA battery model:
SC model is also not common. This is usually the battery cell in the battery. We cansee it on imported power tools, cameras and equipment. is standard. The SC (flat head) battery has a height of 42.0 ± 0.5 mm and a diameter of 22.1 ± 0.2 mm.
Model C is the AA battery and has many uses. The standard C battery (flat head) has a height of 49.5 ± 0.5 mm and a diameter of 25.3 ± 0.2 mm.
Model D is an AA battery, widely used in civil, military and special DC power supplies. The standard D cell (flat head) has a height of 59.0 ± 0.5 mm and a diameter of 32.3 ± 0.2. mm.
Model N is less common and has fewer uses. The standard N (flat head) battery has a height of 28.5 ± 0.5 mm and a diameter of 11.7 ± 0.2 mm.
Reference materials:
Baidu “AA Battery” EncyclopediaBaidu “AAA Battery” Encyclopedia
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