The PowerXtreme batteryrange are ultra lightweight Lithium LiFePO4 batteries, which can be used for caravan, motorhome and marine. The oldfashioned lead-acid batteries come with a lot of disadvantages like the weight, short lifespan, leaking acid and forming of gasses. When using a lead-acid battery you can only use up to 40 percent of its capacity and when not in use it has to be properly maintained. The PowerXtreme batteries are a sollution to all these problems and you will never have to worry about your battery's capacity or health. The PowerXtreme batteries are of the best quality available and come with a Battery Management System that regulates its use.