Antigravity Batteries AG-YTZ10-12 Motorcycle Battery Built in the USA to high quality standards with large brass heavy duty terminal design Ultra-Lightweight and Powerful Lithium-Ion Motorsport Battery Directly Replaces Lead/Acid YTZ10S yet offers much better cranking amps, saves about 6 lbs Can hold a charge up to a year provided there are no "Parasitic Drains" 3 Year Warranty