Sonnenschein was founded in Berlin in 1910 by Theodor Sonnenschein, and had patented the gel-cell type of valve-regulated lead–acid battery in 1957 which was marketed worldwide under the name dryfit. In 1996, Exide battery acquired the battery corporation CEAC which gave them the rights to the German brands Sonnenschein and dryfit. Sonnenschein batteries are widely used in telecoms, UPS, solar, emergency lighting, security, railways amoung many other general uses. Sonnenschein batteries are regarded as one of the highest quality batteries on the market with extreme reliability from the patented dry fit gel technology