| 1884 |
Founding of Friemann & Wolf at Zwickau / Sachsen |
| 1907 |
Founding regional office (branch) of Friemann & Wolf, Zwickau / Sachsen. Consignment stock and manufacture of mining lamps. |
| 1947 |
Reconstruction
Start of the manufacture of:
— Petrol lamps for the mining industry
— Electrical mine lamps
— Chargers for electrical cap lamps. |
| 1949 |
Founding of the manufacture of accumulators (NC). |
| 1950 |
Founding of the company Silberkraft Leichtakkumulatoren GmbH in Duisburg.
Production programme:
Manufacture of Silver-Zinc-secondary and primary batteries. |
| 1980 |
Start of production Li-SO2-batteries and battery packs at Silberkraft. |
| 1992 |
Start of production Li-MnO2-batteries and battery packs at Silberkraft. |
| 1993 |
Merging of the company Silberkraft Leichtakkumulatoren GmbH on the company Friemann & Wolf GmbH into the new corporation FRIWO SILBERKRAFT Gesellschaft für Batterietechnik mbH. |
| 1997 |
Discontinue of supplies for the mining industry. |
| 1998 |
Change of company name to FRIEMANN & WOLF Batterietechnik GmbH. |
| 1999 |
Start of production of Nickel-Cadmium-batteries in fibre structure technology (DAUG-license). |
| 2003 |
Acquisition by SAFT GROUP |
| 2004 |
Relocation to Büdingen, concentration on Li/MnO2 and Silver zinc technologies. |
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