How can my arduino Uno work with akku?

Good day,

I ordered this Arduino Nano replica:

I simply want to connect a Bluetooth module and a RGB to deal with my smartphone via Bluetooth can change the color. The design should be as small as possible.

The whole is to be operated with a battery that also should not be too large. What can I take since then and how I connect to?

l.g Jinooo

How long do you need the battery to last?

What is the average current your RGB LED will require?

If your (unnamed) ‘smartphone’ supports Bluetooth 4.0 you might be interested in this breakout board from adafruit:

Please check the duplicate of this thread in the German section before answering.