12V/50AH Module Atlas lithium battery with built in BMS (Battery Management System) are designed to over perform traditional lead acid battery on the road, water or off-the-grid. They provide more usable energy in a lightweight, no maintenance package. Lifepo4 lithium battery is much more safe, long cycle life and environment friendly, provides a complete line of 12, 24 and 48 volt lifepo4 lithium Iron Phosphate battery for lead-acid replacement batteries. Not Recommended as a Starting Battery. This is a Battery Storage Battery. Used for many application including Boat, RV, Utility Trailer Dump, Solar Battery replacement Storage Batteries, Camping Applications and so much more. (Watch for our Titan DC battery Boxes coming soon)