Portable lithium battery, 40 Ah. The market-leading battery system is based on innovative technology and is the result of years of research and development. The Dometic PLB40 lithium battery features powerful integrated lithium iron phosphate (LiFePO4) battery cells and delivers 512 Wh. The PLB40 is ideal for use with electric coolers and other 12V devices. A single charge is sufficient to power a Dometic CFX3 45 for up to 53 hours. The integrated DC charging unit allows for charging via the vehicle's 12V outlet, solar panel, or AC power grid. A battery management system protects the PLB40 from undervoltage, overvoltage, short circuits, and overheating, ensuring short charging times, high performance, and flexible storage options. Thanks to this management system, the PLB40 has a lifespan up to five times longer than conventional lead-acid batteries.