I would like to know if I just got a bad battery when i purchased my 04 sporty, or are all of the Harley brand "agm" batteries junk? Ever since I have had the bike [4 years now ] I have to keep a trickle charger on it , or it will just barely crank the bike. Finally , it gave up the ghost, and wont crank it at all now. My real question is should I buy another HD brand and hope to get a better one, or buy another brand ? ? ? ?