Flat battery 2008 sportster 1200noon 8,000k

I had same problem, found the Positive cable from battery has parted inside the plastic cover. the cable was broken, but was making and then breaking with the movement of the bike. the bike would run then stop, then would restart later, when running, the engine would sometime spit. replaced the cable with a longer cable , (it was at the starter end of cable that parted) bike working good now.
Good luck
Jim H

need a new battery or the battery needs charged

Bikes and battery do not handle sitting time well probably combination weak battery old fuel and fuel gumming through the pilot circuit - try jumper leads to another battery or to your car you probably find it all comes good if you can just start it and ride it an hour or so

I tried the pep boys route of getting a battery...i would have had to put the acid in the battery and charge it.i wasted like $70 and couldnt use it. i went to Harley and bought their gel battery for i think around $80 , that was in feb. 2008!!though i ride my bike daily,i run 2 sets of blue l.e.d. lights and im still using the same battery. ive got over 4 years so far and it was charged and ready when i bought it!!

yes , you have a charging problem in the voltage regulator
maximum, voltage is 14.5-14.8 volts dc regardless and at 19 volts that affects all of the electronics and boils batteries

You can charge the battery without removing the battery. Find the large cable that comes from the battery where it connects to the starter. Connect you positive charger clamp there. Connect the negative charger clamp to any good frame ground on the bike. You can charge you battery using this method provided you battery charger clamps are not too big.

If you can't do this, you'll have to take the seat off the bike, remove the battery hold down strap, and then move the battery outwards so you can disconnect the negative battery cable.

Good Luck
Steve

often times the easiest answer is the best. make sure the battery connections are tight and free of corrosion.

Sounds like its choking out. Mine does this at a high rate of speed. Check your jets.