I had an idea for a future project (and hopefully the start of a company ) to have some LEDs run off a couple of AA batteries, but I need to know: How many amps does a single AA battery put out?
I looked around, and the consensus seems to be 2400mA for most AA batteries. Energizer claims a peak of 2700 on theirs.
If it's 2400mAh, then you would get 2400 mA for one hour. I'm not sure if mAh ratings take into account the voltage drop of the battery over time, etc.
theres no way you get 2.4 amps from a AA battery. you get less from a 9volt when you stick it across your tounge. maybe 2.4 for like milliseconds...
It's about 2400mAh for an AA, 1200mAh for a AAA and 550mAh for a PP3 battery. 2400mAh means you can draw 2.4A for one hour, 1.2A for two horus, 0.6A for four hours etc...
1C (that is: theoreticly discharging the battery in 1 hour) is not that high a discharge rate for a battery, even a consumer AA. But you wont get that long out of it, the capacity of a battery is measured at the 20 hour rate and the faster you discharge it the less energy you get out in total. I have to wonder about your electrical knowledge if you cant convert between mA and A Moriquendi
well for one, 9v batteries have a high internal resistance, and your saliva isnt that great of a conductor either, not compared to a copper wire. AA NiMH batteries can put out over 20A for short periods (seconds-a minute or two) Ive measured that myself...
it depends of battery types. alkaline is (if i remember right) 1.5 volts but not much amps (cant remeber how much), while ni-cd\ni-hm only are 1.2 volt but comes in all ranges like 1200 mili-A to energizers 2700 mili-A.
HELP battery info: It's about 2400mAh for an AA, 1200mAh for a AAA and 550mAh for a PP3 battery. question: The cam uses 9v at 300ma I believe (or so it says). Which item will last the longest for the cam (generally)? 4 triple A 4 double A 1 9V
The mAh can be thought of as the rate of energy it can provide for you. In the same application, you can eliminate the time component of it, and look at the numbers as energy. 4*2400 >> 550.
I thought it was more a case of the amp hours. Could a battery rated 0.79Ah not put out a current of 7.9A for 1 hour?
But 4*1.5V = 6V (or 4.8V with rechargeables) so 4 AA or AAA cells won't run the 9V cam at all. No. The battery datasheet may show a family of curves for different discharge rates, at the low and high current extremes life will be better and worse than the forecast from the Ah figure.
I'd be fricken amazed if any AA could put out 20a for even one second Maybe a large battery pack of AA's could output 20a, maybe that's what is meant here