Ampere is international unit for current. The flow of charges is called current. if one coulomb charge flow in one second then it is called one ampere of current. ampere is not coulomb but coulomb per second. it is denoted by A or amp. in consumption Ampere is as: A=V/I this is called ohm’s law. this will be discussed in next article.The batteries are rated in AH Ampere- Hours. This means how much current a battery can provide for one hour. this is ideal condition.