The quantity of electricity delivered in one hour by a current whose average strength is one ampère. It is used as a unit of quantity, and is equal to 3600 coulombs. The terms Ampère minute and Ampère second are sometimes similarly used.

a unit for describing the life of a battery which depends on how much current it can produce for how long. Symbol A.h. A battery with a life of 1 A.h is nominally capable of producing a current of 1 A for 1 h, or 0.5 A for 2 h, etc, before it goes flat. Since the product of current and time has the dimensions of charge, it follows that if you run a battery with 1.00 A.h capacity until it is flat, then 1 A.h or 3.6 ¥ 10 C of mobile charge will have passed through the battery. You can estimate the energy that can be delivered from a battery by taking the product of its life and its emf. For example a 2 V battery with a life of 5 A.h should be able to deliver about (2 V) x (5 A.h) which equals 2 x 5 x 60 x 60 J or 7 kJ.

a measurement of the capacity of a storage medium (a single cell or a battery). A cell which can supply 1 Amp for 1 hour before it is discharged to a specified minimum level is said to have a capacity of 1 Amp hour

A constant current flow of one ampere for one hour of time. This commonly use measure of battery storage capacity, multiplied by the battery voltage, will give the total electrical energy stored in watt-hours.

The capacity of a storage battery is measured in ampere-hours. One ampere hour is defined as a current flow of one ampere for a period of one hour. Five ampere-hours means a current flow of one ampere for five hours, a current flow of 2 1/2 ampere for 2 hours, or any multiple of current and time that will result in five. This relationship can be expressed as follows: Capacity (In ampere hours)= I*T. Where I is the current (in amperes) and T is the time (in hours). The capacity of a storage battery is usually based on a given discharge rate, since the capacity will vary with the rate of discharge. The capacity of an aircraft battery is usually based on a one hour discharge rate. A 17 ampere hour battery will supply a current of approximately 17 amperes for a period of one hour. A 34 ampere battery will deliver twice that amount of current over the same period of time. If a very heavy load is applied to the battery, it may become discharged in a few minutes.

A measure of the quantity of electricity, being one ampere for one hour. It is used to express battery capacity. It is obtained by multiplying the current in amperes by the length of time that the current is flowing, abbreviated AH.

(amp hr. or AH), a measure of current over time, used to measure battery capacity.

The product resulting from multiplication of amperes flowing by time of flow in hours, e.g., a battery supplying 10 amperes for 8 hours gives 80 ampere hours. See note under "Volt?' for more complete explanation of current flow.

is the amount of energy charge in a battery that will allow one ampere of current to flow for one hour.

The quantity of electricity measured in ampere-hours (Ah) that can be delivered by a cell/battery under specified conditions.

A measure of the volume of electricity determined by multiplying the number of amps delivered by the time (hours) of delivery.

A commercial unit of electric charge often used to state the capacity of a battery. One ampere hour is the charge accumulated by a steady flow of one ampere for one hour. This is equivalent to exactly 3600 coulombs.

The quantity of electrical energy equal to the flow of current of one ampere for one hour. The term is used to quantify the energy stored in a battery.