Introduction: Power Your Arduino Uno With Four Rechargeable AA Batteries

This Instructable will show how to power your Arduino Uno with four rechargeable AA batteries. You will need:

An Arduino Uno

4 AA battery holder (I HIGHLY recommend this one from RadioShack, as it not only has an internal switch for turning on the Arduino, it also has the necessary wires needed to plug into the Arduino Uno)

4 rechargeable AA batteries, at 1.25V each. (The reason why we should be using rechargeable batteries is because they are efficient and give the Arduino Uno the perfect amount of volts at 5V)

Stanley #1 Screwdriver or something similar 



Step 1: Step 1: Insert the Batteries

Find the screw on one of the sides of the case, and remove it with the screwdriver, then slide the lid so that the battery holder is uncovered. Place your charged rechargeable batteries in the respective orientation. Finally, slide on and screw on the lid again. 

Step 2: Step 2: Plug the Cables In

Plug the positive, red cable into VIN, and the negative, black cable into one of the GND ports. Then, turn the switch on the battery case to ON. 

Step 3: Step 3: Run Your Arduino Uno

Your Arduino Uno should now run!

Comments

author
ishan553 (author)2014-04-20

what will happen if i use 6 aa battries

author
pabloevaristo (author)ishan5532017-02-27

Nothing, it is ok. With only 4 batteries you'll be close to the minimun and can cause Arduino to reset

author
JoãoP121 (author)2016-12-14

Hello, I measured 4.5 Amps in a stack of 6 AA batteries (which gives it
9.5V, pretty in the average). Is this amperage ok to power up an arduino
uno? Can anyone tell me that? because I can't figure it out. Thanks!!!

author
MikeM189 made it! (author)2016-08-28

Running a standard Arduino board with a battery will drain the cell very, very quickly. If want to run your project for long periods, have a look on this project: https://talk2.wisen.com.au/product-talk2-whisper-n...

It is designed to run on common AA batteries for longer periods and also counts with a wireless transceiver for long range communication! Cheers!

whispernode_0-3v.jpg
author
innerbubba (author)2015-10-19

Each AA battery puts out between 1.25 and 1.5 volts. If you use 4 AA batteries in series, you've got a stack producing 5-6V. The linear regular will provide 5V to the processor by burning the extra voltage as heat.

The problem here is that if you add another 2 AA batteries in series, you're just stepping up the input voltage, making the linear regulator waste more energy to provide 5 V to the processor. You'd be better off building a stack of 8 AA batteries: two 4-battery series stacks in parallel with each other.

author
innerbubba (author)2015-10-19

Each AA battery puts out between 1.25 and 1.5 volts. If you use 4 AA batteries in series, you've got a stack producing 5-6V. The linear regular will provide 5V to the processor by burning the extra voltage as heat.

The problem here is that if you add another 2 AA batteries in series, you're just stepping up the input voltage, making the linear regulator waste more energy to provide 5 V to the processor. You'd be better off building a stack of 8 AA batteries: two 4-battery series stacks in parallel with each other.

author
innerbubba (author)2015-10-19

Each AA battery puts out between 1.25 and 1.5 volts. If you use 4 AA batteries in series, you've got a stack producing 5-6V. The linear regular will provide 5V to the processor by burning the extra voltage as heat.

The problem here is that if you add another 2 AA batteries in series, you're just stepping up the input voltage, making the linear regulator waste more energy to provide 5 V to the processor. You'd be better off building a stack of 8 AA batteries: two 4-battery series stacks in parallel with each other.

author
innerbubba (author)2015-10-19

Each AA battery puts out between 1.25 and 1.5 volts. If you use 4 AA batteries in series, you've got a stack producing 5-6V. The linear regular will provide 5V to the processor by burning the extra voltage as heat.

The problem here is that if you add another 2 AA batteries in series, you're just stepping up the input voltage, making the linear regulator waste more energy to provide 5 V to the processor. You'd be better off building a stack of 8 AA batteries: two 4-battery series stacks in parallel with each other.

author
innerbubba (author)2015-10-19

Each AA battery puts out between 1.25 and 1.5 volts. If you use 4 AA batteries in series, you've got a stack producing 5-6V. The linear regular will provide 5V to the processor by burning the extra voltage as heat.

The problem here is that if you add another 2 AA batteries in series, you're just stepping up the input voltage, making the linear regulator waste more energy to provide 5 V to the processor. You'd be better off building a stack of 8 AA batteries: two 4-battery series stacks in parallel with each other.

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