Varta AG, through its subsidiaries, engages in the research, development, production, and sale of micro and household batteries, large-format batteries, battery solutions, and energy storage systems in Europe, Asia, North America, and internationally. It operates in five segments: Micro Batteries, Lithium-Ion CoinPower, Consumer Batteries, Energy Storage Systems, and Other. The Micro Batteries segments offers zinc-air batteries under the power one and ecopack brand names for use in microbatteries and hearing aid devices. The Lithium-Ion CoinPower segment provides lithium-ion battery solutions for wireless headphones for medical devices to measure hypertension, blood sugar, and other bodily functions, as well as the power supply for COVID19 antibody tests. The Consumer Batteries segment offers household batteries, rechargeable batteries, power banks, chargers, and lights. The Energy Storage Systems segment provides energy storage solutions for the home and mass storage markets. The Other segment offers lithium-ion large cells product for rechargeable battery solutions for industrial and original equipment manufacturers for applications, such as servers, applications in alarm systems, or smart meters; and produces rechargeable, standardized, and customized battery packs for industrial and wireless applications. This segment is also involved in the development, system integration, and assembly of lithium-ion battery packs for portable industrial, communication devices, electric power tool, home, garden, and medical applications. The company was founded in 1887 and is headquartered in Ellwangen, Germany. Varta AG is a subsidiary of Montana Tech Components AG.