Consumer Electronics

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# How many amps are in a 9v battery?

###### Wiki User

###### May 10, 2010 8:09PM

there are 500 milliamps (500 mA) in a 9-volt alkaline battery.

## Related Questions

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### What is the difference between the car battery and 9V alkaline battery?

A car battery has six cells each producing two volts. A 9v
alkaline battery has six cells each producing 1.5 volts.
There are some obvious differences, like that a car battery can
put out hundreds of amps and a 9v alkaline can only put out
hundreds of milliamps, a 9v battery weighs 45 grams versus 45
pounds for a car battery, and so on.

###### Asked in Consumer Electronics, Car Batteries, Solar Power

### What is stronger a 1 amp battery charger or a 9v battery?

You cannot compare these two totally different things. As far as
amperage the charger puts out more amps if it is an auto battery
charger and also puts out 12 volts. If you are talking about a 9
volt battery charger then the battery may or may not be more
powerful, it depends on how many mii-amps the charger is putting
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###### Asked in Home Electricity, New Electrical Work, Modification of Old Electrical Work

### How many amps in a 9 volt battery?

The question should be how many amp-hours in a battery. In a
small batt. like a 9V, this is measured in milli-amp hours (mAh),
with 0.5 amp hours equaling 500 mAh. This means the battery could
power a 0.5 amp load for 1 hour. Data I have seen shows the best
alkaline 9V being between .3 and .5 amp-hour (300 to 500 mAh).

###### Asked in Appliance Voltage and Travel Issues

### Can you use a 9v 600Ma adaptor to power a 9v 300Ma appliance?

I think you mean to ask if one can use a 9v 600mA adapter to
power a 9v 300mA appliance. Yes, you can do that. A 9v 600mA
adapter will deliver 9v at up to 600mA.
A mA is one milli amp, or one thousandth of an amp.
300mA is 300 thousandth of an amp, 300/1000 or 0.3 amps.
600mA is 600 thousandth of an amp, 600/1000 or 0.6 amps, and is
twice the current of 300mA.