Tausch ... my .02 follows ....after reviewing your gallery inventory, assuming it's up-todate , noting that you're running the stock frt & rear turn signals less the license plate light and have the OEM decomp and cam covers simplifies the trouble shooting process.
Some of the aforementioned mods mentioned by Marco Polo, can have chronic problems that contribute to what might appear to be a bad battery but isn't.
Because the weak battery has been preexisting since day one, i would agree with Marco and not replace it at this time. I would check all relevant connections and devices that would contribute to this problem as stated by Dice.
My tools of choice for this challenge would be a Digital volt ohm meter ($10.00-$15.00) and Battery Tender Jr ($30.00)) at a minimum.
Charge the battery completely off the bike and when done check the output voltage. A well charged AGM battery will yield > 12.7vdc ... my OEM GS battery (> 60 months old ) puts out 12.84vdc when fully charged with no other connections today!
-
Alternatively, take the battery to a reliable shop and have it load tested after being fully charged.
-
-
Thoroughly inspect the starter motor connector under the rubber boot for tightness and validate the mechanical crimped connection as well as the battery positive and negative cables.
midnight_run - Faulty Starter Relay symptoms and fix w/ part no. http://rswarrior.com/forums/p/122342/979530.aspx#979530
Churchkey - Bike Dies when i pull the battery cable.http://rswarrior.com/forums/p/118726/957003.aspx#957003