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 - 800. 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.