Gel cell lead acid batteries produced to exacting industrial standards. Heavy duty case design with superb quality assembly and quality control means that you can rely on these cells to provide you with reliable starting power, drive power and glow power, charge after charge and year after year. Use the 12 Volt in your flight box. The 6 Volt versions make great drive cells for all sizes of electric boat and the tiny compact 6 Volt 1.2 Amp hour fits into spaces where other batteries simply will not go. Guaranteed leak-proof and non-hazardous.