Why is Battery Capacity Specified in Ampere-Hour?
An ampere is a unit for measurement for the amount of electricity current flowing through a circuit. One ampere is the same as one coulomb of electric charge flowing past any point per second. It is also the same as current produced by one volt of electricity applied across a 1-ohm resistance. One ampere-hour is equal to a current of one ampere flowing for one hour. So, if you have a two ampere-hour battery, then it has the capacity to flow a two-ampere current for one hour. Or you can use the same battery to flow a one-ampere current for two hours. Therefore, a larger Ah always specifies higher capacity.
