Dryfit solid Germany sunshine battery (Sonnenschein) developed battery is an outstanding representative of the technology. In 1957, the company started to develop a solid battery. Solid sealed battery sealed battery, new gel developed for the sun to company provided favorable conditions. 40 years, solid electrolyte formula and special additives continue to study improvements in the field of research and development, manufacturing and application process. In-depth study found that the solid-state batteries with low self-discharge, resistance to deep discharge performance, long cycle life and floating charge and lower float current is small, low-maintenance, easy to maintain, no corrosion, no pollution, no gas to escape, no liquid overflow, and environmentally friendly. Over the years the company has developed into a 12V 1Ah battery until 3000Ah various solids, including fixed, traction, starter type, pasted plate and tubular plate. The products are widely used in industrial, military and household appliances. For example, a tank battery shelved during battery deep discharge plate sulfation damage resistance due to the solid battery deep discharge performance is very excellent, the German Army tanks equipped with all Germany Sunshine Company a 12V 100Ah Dryfit solid battery. The company "City Stromer" electric vehicle equipped with a 6V 160A Dryfit after four years of operation of the traction-type solid-state battery pack remains 90% capacity. Present, except Germany, Japan, the United States and other countries in the development and production of solid battery sales world leader, a wide range of applications. Solid gel electrolyte, no internal short circuit. Other maintenance-free batteries (adsorption) in the same volume, the electrolyte capacity is greater than 10% -20%, a large heat capacity, heat dissipating ability.