Battery Energizer
What is the current rating on a standard energizer alkaline AA battery?
I plan on driving several 3v leds using standard AA batteries and I wanted to know how many I can run max on 20ma an led.
AA battery has an amp-hour rating of 2 amp-hours.
Answer depends on how long you want the battery to last. If you want 1 hour, you can get 2 amps for 1 hour, which means 2000/20 = 100 LEDs
for 2 hours, you can get 1 amp, so that is 50 LEDs
for 4 hours, 25 LEDs.
But that is under ideal conditions. I'd cut that number in half for real life use.
.
Energizer Bunny® - Darth Vader - 1994 Commercial
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