I have sold alot of Shorai to 600 mini sprints, full midgets, and lots of road racers. The only problem was me. On the first one I use a normal battery charger. If you do,do not charge more than 5 minutes at 2 amps. I went 30 minutes and fried it. Now I have the factory charger and perfect. Many different sizes also. Need cranking amps and physical size needed. Mine weighs 1.8 pounds.

Lynn