Power and performance best describe an Odyssey battery. Odyssey batteries are built for auto/truck, powersports, marine, heavy duty, and fleet vehicles. Their Extreme series is perfect for keeping your vehicle going with twice the overall power and three times the service life of your standard battery. The Extreme series batteries are made of 99% pure lead. The pure lead plates are made thinner so more can fit inside the battery, creating more power. ODYSSEY® batteries are manufactured by EnerSys Energy Products Inc., a wholly owned subsidiary of EnerSys. EnerSys® is a global leader in stored energy solutions for automotive, military and industrial applications.