Was reading comments on the Panasonic battery. Better amperage rating and seems to hold up well. However, I like my 680; the lower amperage hasn't been an issue (yet!).mtrevelino said:My 680 would have probably lasted forever, but every time I started my bike, it would crank slow. On cold winter mornings, it was more slow. So finally, after about four years, I replaced it with the Westco which has a higher amperage rating.