I don't hold Mottobat in high regard from personal experience, i have had 2 in a row that failed at about 18 months old mark which i find annoying. My shop of choice stocks these mediocre batteries as he gets them at the right price, also he can reduce his stock inventory because of the terminal configurations. But as a consumer I expect more than 18 months from an AGM battery in an AN650 with a perfectly healthy charge system. This time i sourced a Yuasa and time will only tell, but i feel confident I will get 3 or more years from it. As for Mottobat, I treat that brand with extreme caution from now on. Li-On looks the go these days, they will fall in price given time. Lighter weight, pack more punch and hold charge longer over time and are sealed from the atmosphere, no leaks, way to go!!