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Old 07-11-2007, 08:40 AM #1
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Default AAA vs AA

ok guys its something thats been nagging me but i have not asked for a while... whats the difference between AAA and AA batteries? i mean is it just physical size or is there more to it?


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Old 07-11-2007, 09:05 AM #2
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Default Re: AAA vs AA

Its Mostly all about the size. Greater volume in the battery means you pack more of the reactive chemicals into a single cell, giving Longer / Higher current draw.

Jase
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Old 07-18-2007, 12:28 AM #3
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Default Re: AAA vs AA

Jase touch on it pretty good but there's a bit more.

While aa and aaa have the same voltage, no load, the aa's will output more current because they have lower internal resistance. This is why a couple of my red's have no resistor using aaa's. If I put in aa's ---- POOF --- behold a weak LED :-(.

When building RED's with DVD LD's, you need to "characterize" it and draw your series circuit including all resistances, voltage drops and cell impedances. Even then, there's a big GULP when you push the button. !!!

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