i been useing a battery from battery ware house . not sure but this is my third or 4 year still stong. best i used so far . I dont recomend interstate . i have had bad luck with them. only lasted 6 months to a year with them.
So you would get the battery for when the bike is not running? Would there be a need to upgrade the output of the alternator when you reach a level of high end sound , air ride, aux. lights, etc.?
I have used them all Braille is the only way to go. $180 I think. You can run the radio for a hour and still have enough power left to start the bike. Stock battery will last about 10 mins