Sulphation is the ultimate killer of Lead-Acid Batteries. Sulphation begins to occcur at anything less than 90% of full charge. Therefore, to get the maximum life out of your battery, you must maintain it at greater than 90% of full charge. The best way to accomplish that is to keep it on a Battery-Maintainer when you're not riding your bike. I use, (and have for years) the Battery-Tender Jr. (Part #021-0123). It has a maximum output of .750 milliamps, which means that, even at full charge-rate, it won't boil the electrolyte out of your battery (another common reason for battery failure, especially on small-volume batteries like ours).
So, if you want to make your battery last dependably longer, get yourself a Battery-Tender and keep it plugged-in when your not riding your Fury. My two-bits............
Cheers