| サムネール | 年 | 篇 | タイトル | 内容 | コメント | イメージ | ファイル |
| 1975 | Sony–Eveready established as joint venture between Sony Corp. and Union Carbide Corp. of USA. | Sony–Eveready established as joint venture between Sony Corp. and Union Carbide Corp. of USA. |
| 1977 | Begins production of Silver–oxide Batteries | Begins production of Silver–oxide Batteries |
| 1979 | Begins production of Alkaline–manganese Dry Battery | Begins production of Alkaline–manganese Dry Battery |
| 1982 | Begins production of Lithium Coin Batteries | Begins production of Lithium Coin Batteries |
| 1986 | Joint venture with Union Carbide Corp. dissolved and name changed to Sony Energytec. | Joint venture with Union Carbide Corp. dissolved and name changed to Sony Energytec. |
| 1991 | Begins production of Lithium–ion Batteries | Begins production of Lithium–ion Batteries |
| 2000 | Sony Energytec merged with Sony Motomiya to form Sony Fukushima. | Sony Energytec merged with Sony Motomiya to form Sony Fukushima. |
| 2004 | Sony Fukushima merged with Sony Tochigi to form Sony Energy Devices Corp. | Sony Fukushima merged with Sony Tochigi to form Sony Energy Devices Corp. |
| 2017 | Established production company, Tohoku Murata Manufacturing Co., Ltd. | Established production company, Tohoku Murata Manufacturing Co., Ltd. |
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