AA (size 5) battery: 14.3mm diameter, 50.5mm length, about 20g weight. AAA (size 7) battery: 10.2mm diameter, 44.5mm length, about 8g weight. AA battery volume is about 2.5 times AAA.
AA 1.5V lithium battery capacity covers five tiers from 2400mWh to 4070mWh, maximum capacity is 3.7 times AAA. AAA 1.5V lithium battery capacity covers 600mWh and 1100mWh two tiers.
AA batteries suit higher-power devices: smart locks, electric toys, high-power flashlights, medical devices (glucose meters/blood pressure monitors), electric toothbrushes. These devices need large capacity and higher operating current.
AAA batteries suit lower-power, space-constrained devices: remote controls, wireless mouse, ear thermometers, wall clocks, laser pointers, Bluetooth earphone charging cases. These devices are sensitive to battery size and weight.
Our technical team can provide professional battery selection solutions and OEM/ODM customization services based on your device requirements.
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