The NEW Antigravity ATX12-HD battery is a High Power, lightweight lithium replacement for the popular YTX-12/14/16 size Lead/Acid battery. This is the HEAVY DUTY version, designed with significant Power and Amp-Hour Capacity in this popular case size. This battery is suitable as a much lighter replacement for a regular size lead acid battery. It only weighs 3 lbs! The 16 amp hour capacity is great for motorcycles, quads, or small displacement drag racing cars that don't need higher capacity like daily driver cars. For a daily driver car with a really demanding electrical system we recommend the ATX30-HD instead.We can only ship this product by GROUND with UPS or FedEx in the lower 48 US States!Need a different size we don't have listed? Let us know and we'll add it to the website ASAP!