These battery holders connect 3 AAA and 3 AA batteries together in series for powering all kinds of projects. We spec’d these out because the boxes are slim, and 3 AAAs or AAs add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries, plus they each have a nifty on-off switch. That makes them ideal for use with 3.3V projects that have a 2-pin JST connector meant for one of our Li-Ion/Poly batteries. (Of course, you can’t recharge them like Li-Ion/Polys, so don’t try to plug these into one of our Li-Ion/Poly charger boards!) They also feature an ergonomic belt clip for taking your power on the go!
They respectively fit any standard AAA and AA battery. When using rechargeable NiMH the output voltage will range from about 3.7V with charged batteries to 2.7V at the end of life with a nominal voltage of 3.6V. When using alkalines, the output will range from 4.6V with new batteries to 3.3V at the end of life with a nominal voltage of about 4.5V.
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