
How Many Amps Does a 9 Volt Battery Have? Understanding
A standard 9-volt battery has a capacity of about 0.5 to 1 amp-hour. This means it can supply 0.5 to 1 amp of current for one hour. You can think of it like this: if you use a device that draws 1 amp, the battery will last for about an hour.. However, if your device uses only 0.5 amps, the battery will last about two hours.








































