CompanySony Energy Devices Corporation was founded in 1975 in the Japanese city of Fukushima, as a joint organization of the Sony Corp group of companies and the American company Union Carbide Corp. Initially, the organization was called Sony-Eveready, then, after a restructuring in 1986, it was renamed Sony Energytec. The company received its current name in 2004 after merging with other subsidiaries of the corporation (Motomiya and Tochigi).
Sony Energy Devices Corporation was created to consolidate all of Sony's energy developments. The company's core business has always been the development and production of power sources (primary and rechargeable batteries). Today, over 90% of its production facilities are located in China and Singapore, with a small portion remaining in Japan. Its main research centers and laboratories remain in Japan.
The company's energy storage devices are exported worldwide and used in a wide variety of devices, including mobile phones, watches, headphones, tablets, laptops, robotics, automobiles, cameras, camcorders, power tools, calculators, and more. Sony pioneered the lithium-ion battery era, becoming a pioneer in this segment of the energy storage market in 1991.
The main stages of development
| Year | Events |
| 1975 | Base. |
| 1977 | Manufacturing of silver oxide batteries. |
| 1979 | Release of alkaline-manganese dry battery. |
| 1982 | Production of lithium coin batteries. |
| 1986 | Restructuring. Renaming to Sony Energytec. |
| 1991 | Development and production of lithium-ion batteries. |
| 1998 | Production of electrodes for lithium-ion batteries has begun. |
| 1999 | Manufacturing of polymer lithium-ion batteries. |
| 2000 | Development and production of power supplies. |
| 2000 | Merger with Motomiya. |
| 2004 | Merged with Tochigi, renamed Sony Energy Devices Corporation. |
| 2014 | Establishment, in partnership with Hydro-Quebec, of the company Esstalion Technologies. |
In 2016, the corporation decided to sell its battery business to another Japanese company, Murata Manufacturing. The deal was closed in September 2017. All production facilities, research centers, and employees were transferred to the new owner, but Sony retained the right to sell energy storage devices under its own brand.
The main products sold today under the Sony brand in the power supply market are:
- Alkaline batteries;
- Silver-oxide batteries;
- Lithium batteries;
- Batteries for mobile devices and computers;
- Storage devices for photo and video equipment;
- Power supplies for charging batteries;
- Portable chargers;
- Storage tanks for industrial enterprises and transport;








