| History of Innovation |
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Rayovac - A Long and Proud History of Innovation |
| 1937 - |
Rayovac filed a patent on March 6th 1937 with the first wearable vacuum tube hearing aid |
| 1949 - |
Rayovac introduces the crown cell alkaline for hearing aids |
| 1964 - |
Rayovac develop the dial pack for hearing aid batteries |
| 1977 - |
Zinc Air Hearing Aid Battery Cell Introduced |
| 1979 - |
The Rayovac MicroPower Group was established |
| 1980 - |
The new and superior “Air 2000” premium hearing aid battery was launched |
| 1986 - |
8-pack Dial Card Configuration Introduced |
| 1995 - |
Size 5A Introduced |
| 1996 - |
Launch High Power |
| 1997 - |
12 pack introduced |
| 1998 - |
36 pack introduced |
| 1999 - |
Increased Capacity Over 12-18 Months |
| 2003 - |
High Rate and Long Life in One Design |
| 2004 - |
State of the art Sealant |
| 2005 - |
World’s Only 4-Year Freshness Date Code
Rayovac Advanced Introduction |
| 2006 - |
Launch of Rayovac ADVANCED – up to 17% More Power and 10% more mAh |
| 2006 - |
Launch of Rayovac Cochlear |
| 2007 - |
Launch of Rayovac Extreme Performance |
| 2008 - |
Launch of Rayovac Mercury Free |
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