3 Year Warranty Free Shipping To US Inner 48 Lithium Ion Deep Cycle. Can be used in both parallel and series up to 48V. Can be used in series 24V . 36V . or 48V applications. Use only Lithium-Ion LiFeP04 chargers with this battery. Our new Super lightweight Lithium ion LifePo4 battery is 1/3 the weightand has 3xs the life. Here are the Highlights. CCA -900. Dual Terminal Marine Posts -Yes . real dual terminal marine posts – just like every other marine battery made since 1930. Lightweight -Weighs 60% less than typical AGM or Leadbatteries. Extended Life Cycle -lasts 3X longer than AGM or SLA batteries. Additional Features/Details High power BMS ??Battery Management System?? -This will protect the battery from being over-charged . discharged or evenshort-circuiting. Patent Pending Dual Marine Posts -Made of the highest quality fine copper to increase the unit’s starting ability. Emergency Start -If the battery does not start your boat . press the emergency start button and then try to start your boat again. Green Energy -Non toxic . no acid . no lead .environmentally friendly. It’s not a Battery . It’s a Banshee.