This battery holder connects 3 AA batteries together in series for powering all kinds of projects. Adafruit spec'd these out because the box is compact, and 3 AA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries, plus it has 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 Adafruit's Li-Ion/Poly batteries. (Of course, you can't recharge them like Li-Ion/Polys, so don't try to plug this into one of Adafruit's Li-Ion/Poly charger boards!). It also features an ergonomic belt clip for taking your power on the go!
Fits any standard 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 4.5V with new batteries to 3.3V at the end of life with a nominal voltage of about 4.5V.
The polarity matches that of Adafruit's 2-pin JST cable and Li-Ion/Poly batteries. Uses a genuine JST connector so it wont 'catch and tear' in JST connectors.
Documentation and Resources:
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