[ELI5] Why are battery capacities expressed in Ah (Amperes-hour) and what does it mean, for example, a AA battery that is 2500 mAh?
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Like you’re five?
The mAh is how much energy the battery can hold. Like how much water can fit in a water bottle. More amp hours means the battery lasts longer. Or it can pour out more water (electricity).
Building on the water bottle analogy, the voltage is how much pressure the energy / water sprays out of the bottle / battery with. Higher voltage = higher pressure.
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