Final answer:
The term mA·h means milliampere hours, which is a unit of charge referring to the charge that a battery can provide. Multiplied by the battery's voltage, it also indicates the energy capacity of the battery.
Step-by-step explanation:
The term mA·h stands for milliampere hours. This is a unit of charge used to describe the total charge a battery can supply. One milliampere hour (mAh) is equal to the charge transferred by a steady current of one milliampere flowing for one hour.
As for how this relates to energy, since current (in amperes) multiplied by time (in hours) equals charge, and amps times volts equal watts, then ampere-hours times volts result in watt-hours. Therefore, milliampere hours when combined with the voltage of the battery can determine the energy capacity of the battery in watt-hours.