Anybody ever had the battery in the Smart siren ll to die? My 07 Ultra Classic is giving the 3 beep instead of 2 when arming. I think this is a sign of a dead or weak battery. I think the life of these batteries are 4 to 6 years. Mine is 4 years old. I read too that when getting the replacement kit will need to ride bike at least 4 hours to charge the new battery. Have anybody change out this system?