+**Battery capacity** measures the total [Electric Charge](/wiki/electric_charge) a battery can deliver, defining its stored energy. Typically expressed in [Ampere-hour](/wiki/ampere-hour) (Ah) or milliampere-hours, it determines a device's operational endurance.
+## See also
+- [Battery](/wiki/battery)
+- [Energy](/wiki/energy)
+- [Voltage](/wiki/voltage)
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