Dependable power for your specialty devices. CR1620/DL1620 Lithium Batteries provide lasting energy for watches, remote controls, medical devices, and more. Rayovac has been manufacturing batteries in Wisconsin, USA since 1906 and the company has continued its innovation in battery cells for the civilian and military sectors ever since. Today, with over 600 employees worldwide, it produces more than 1 billion batteries per year as part of Spectrum Brands, from sites across America.