The length and number of LiteStix will determine the size of the battery pack required to power your lights.
LiteStix require around .5amp/ft., so simply take the "mAh" of the battery pack, and divide it by the total amperage for your LiteStix.
For example, if you are running a two 2' LiteStix, which means a total of about 2 amps, we would suggest using a battery that has a 2000 mAh, or higher. 2000 mAh should run the LiteStix for about an hour at full power.