What is the amperage in a 9-volt battery?

Answer by  Allstar (2071)

It isn't the same for all of them. It actually varies widely depending on type; Ni-Cd rechargeables produce 120 milliamp-hours, while lithium batteries can produce up to 1200mAh. Remember, that's how many milliamps it can produce in an hour. Draw half of that, and the battery will last two hours.

Answer by  DrHarris (508)

Batteries do not have amperage, or current. Current is what is being drawn from it by a circuit. They do have Capacity, which is the number of amps per hour. The typical alkaline capacity is 565 mAh, which means you can draw 565 mA for one hour before it depletes.