Connect arduino uno or nano to a battery pack

Hey I'm doing a prop project, I have arduino nano board and adafruit 24LED ring. But I need to connect arduino to a portable battery. So I have battery pack wich output voltage 10.8 - 12.6V DC and output current is 1-2A.

Just to be clear I need to connect positive side to Vin and ground to any ground pin? And is it safe to connect 12,6V to arduino nano or arduino uno?

Thanks!

I connected an adafruit ring and a Uno to an inexpensive USB power bank.

Super easy. Portable.

vinceherman: I connected an adafruit ring and a Uno to an inexpensive USB power bank.

Super easy. Portable.

I would do that too, but i don't have a battery bank. I have battery pack like this

http://www.ebay.com/itm/1800-15000mAh-DC-12V-Rechargeable-Portable-Super-Li-ion-Battery-Plug-/182674908461?var=&hash=item2a8845e52d

Karolis:
Just to be clear I need to connect positive side to Vin and ground to any ground pin?

And is it safe to connect 12,6V to arduino nano or arduino uno?

  1. Yes, but…

  2. You can’t power anything from the Nano’s 5volt pin at that input voltage.
    And very little (<100mA) from the Uno.
    A 24-LED ring (1.3Amp) would fry both.

You need a 5volt buck converter (>=2A) for this setup.
With it’s output directly connected to the LED ring and the 5volt pin of the Nano.
Leo…

I use cheap cigarette lighter USB chargers from China. They cost one or two bucks and otherwise turn a wide variety of voltages into 5 volts using a wee buck converter. Many come with a blue light.