AG3 and AG4 batteries are not the same. The parameters of the two are different:
1.
The standard voltage of the AG3 button battery is 1.5V, and the
capacity is 13mAh. The diameter is 6.8mm, the height is 2.1mm, and the
average weight is 0.28g.
2. The standard voltage of the AG4
battery is 1.5V, and the capacity is 18mAh. The diameter is 6.8mm, the
height is 2.6mm, and the average weight is 0.34g.
AG1 battery
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R03 Carbon battery
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battery aaa alkaline
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1.5v Alkaline battery
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