WEST MARINE Group 24 Lithium Iron Phosphate Dual Purpose Battery, 12V 120Ah One battery that truly does it all. The WEST MARINE Group 24 Lithium Iron Phosphate Dual Purpose Battery in 12V 120Ah delivers reliable engine cranking power and impressive reserve capacity for trolling motors, marine electronics, and onboard accessories, eliminating the need for multiple batteries and the complexity of managing separate systems. With 1000A of marine cranking amps and 120Ah of dependable LiFePO4 chemistry, this dual-purpose battery gives you the versatility serious boaters demand, whether you're firing up your engine or powering continuous house loads throughout the day. Built on chemically stable, resilient LiFePO4 technology, the advanced battery management system protects against overcharge and over-discharge while maintaining an IP65 rating for harsh saltwater and freshwater marine environments. With high energy density and exceptional power output, this Group 24 lithium battery delivers up to 10 times the lifespan of traditional lead-acid alternatives, translating to years of dependable service and real cost savings that add up fast. The lightweight design won't compromise your vessel's performance or fuel efficiency the way heavier lead-acid batteries do, keeping your boat responsive and economical whether you're cruising coastal waters or anchored for extended periods. Deep-discharge capability means you can safely access the full 120Ah capacity without worrying about cell damage or degradation, providing genuine reserve power for engine starting, trolling motor runtime, and continuous accessory operation. Stable voltage output keeps your engine starting reliably, your trolling motor running efficiently, your navigation systems operating consistently, and your audio systems delivering full power throughout every charge cycle. Fast-charging efficiency gets you back on the water quickly with minimal downtime between trips, while zero maintenance requirements and eco-friendly LiFePO4 chemistry eliminate the sulfation and corrosion that plague conventional marine batteries. This is dual-purpose done right: serious cranking power, impressive reserve capacity, lightweight efficiency, and the reliability you can count on trip after trip. This battery is ABYC certified, giving boat owners and marine professionals confidence that it meets established safety standards for use in recreational boats and marine electrical systems. What is ABYC? The American Boat & Yacht Council (ABYC) is a non-profit, member organization that develops voluntary global safety standards for the design, construction, maintenance, and repair of recreational boats. ABYC also provides standards-based technical education and training to help marine professionals build skills, stay current, and advance safety across the boating industry.