The Antigravity V-10 is one of our XPS (Extreme Power Series) models of batteries. Dedicated to one thing: extreme starting performance in the smallest, lightest package possible! The negative terminal is on the left side. This battery is mainly for custom large V-Twin motors where the motor starting is the intended benefit. Race use for Drag Bikes, Sport Bikes, Race Cars, Sand and Off-Road Performance Vehicles. Not recommended for daily driver touring vehicles.