Also, when buying a powersports style battery from a box store, check the manufacture date of the battery.
I bought a 'brand new' one from autobone that was on the shelf 2 yrs! it lasted another 2 in the bike so I wasnt disappointed. also, same autobone I got my new AGM this last time still had batteries from that old batch. the counter clutz had no idea how to read the date code. I had to tell him no to 3 batteries he brought me before I finally got one less than a year old