We are now stocking EarthX batteries. http://www.cjdesignsllc.com/earth-x-batteries/ We will be testing these out this season in my bikes after seeing them in person and liking the idea of a "BMS" integrated into the battery. As soon as the snow is gone we'll start our long term test. Larger CCA options, and more true ratings. 2 Yr warranty. MADE IN THE USA!