So you will need an Arduino (or similar) to drive the board. You could power the Arduino from a battery pack and the display from the Arduino. There is a post here on the forum that describes the current draw of the board. So I suspect that batteries will not provide enough current to drive a full brightness but you would need to do the math. I have also noted that when powering the Arduino from a 12V supply the current draw across the voltage regulator can cause the arduino to hang.