Love lithium batteries, but haven’t got much space? A KickAss ultra slim lithium battery is the answer. Our ultra slim lithium batteries are designed with all the advantages of traditional lithium batteries, including exceptional depth of discharge and reliable power delivery, but are packaged in a remarkably compact, ultra slim box. Perfect when space is tight, such as in caravans, campervans, 4WDs or boats. As an added bonus, our ultra slim lithium batteries are less than half the weight of equivalent AGM alternatives.