I want to make a rechargable battery pack for my Arduino car, I was wondering if I can run it off 6x 2400mAh 1amp Li-ion batteries?

 

Welcome to AAC!

Maybe.

1. How are the batteries configured? Series? Parallel? Series and parallel?
2. How much current does the motor draw?
3. How long do you want it to run?

 

Welcome to AAC!

Maybe.

1. How are the batteries configured? Series? Parallel? Series and parallel?
2. How much current does the motor draw?
3. How long do you want it to run?

Thanks, so, the motors (individually) draw from 70mA to max 240mA, the batteries are going to be connected in parallel. I'd like the car to be able to run for at least a hour or two without needing to recharge, I think the batteries should have the juice for that.

 

Does your Arduino operate from 3.7V?

 

The Arduino needs a 5v supply. I think it might operate on 3.7v but it wouldn't be as efficient

 

The Arduino needs a 5v supply.

So it has a separate power source?

 

Have a look for "MT3608" on Ebay.


I have not used them, but they sound like a way to go.
Set the output to 5V to run the Arduino. or even 7V is you want to use the Arduino's regulator. That will have a bit more loss, but compared to the motor current, not much.

 

Have a look for "MT3608" on Ebay.
View attachment 198031

I have not used them, but they sound like a way to go.
Set the output to 5V to run the Arduino. or even 7V is you want to use the Arduino's regulator. That will have a bit more loss, but compared to the motor current, not much.

Have a look for "MT3608" on Ebay.
View attachment 198031

I have not used them, but they sound like a way to go.
Set the output to 5V to run the Arduino. or even 7V is you want to use the Arduino's regulator. That will have a bit more loss, but compared to the motor current, not much.

I have something similar. Ok so, if I connect the batteries is series the voltage would add up so I would have enough to power everything, right?

 

So it has a separate power source?

The arduino can be either posted by USB or by connecting 2 cables to certain pins.

 

Those boost converters will give you the 5V from a 2V or better input, so just keep the batteries in parallel.

But, you may need to step back a bit..
Set the batteries up to suit the motors you are to use. That will dictate if they are serial or parallel.
Then decide if you need a boost or buck regulator for the Arduino.