The French Battery Company incorporated in Wisconsin on Jan. 17, 1906. The first products (6-inch cells used to operate telephones and for engine ignition) were made in a Chicago attic. Manufacturing moved to a rented Madison, WI building in March, 1906.
The French Battery Company starts selling flashlight batteries.
The French Battery Company introduces the "French Flasher."
"Sales Winner" battery display cabinet is first point-of-sale display at Rayovac.
First time the name Ray-O-Vac is used. Trademarked for dry batteries used chiefly for vacuum tube radios.
Charles Lindbergh solos across the Atlantic on May 20, 1927 in the "Spirit of St. Louis," carrying two Ray-O-Lite flashlights as part of his emergency equipment.
Arthur Wengel, Rayovac's chief electronics engineer, patented the first portable radio with high fidelity reception.
The patent was offered to industry manufacturers free of charge, to promote battery usage.
The French Battery Company changes its named to the Rayovac Company.
Rayovac's Arthur Wengel patented the first wearable vacuum tube hearing aid.
This patent was also offered to the industry to promote battery sales.
The first leak-proof “sealed in steel” dry cell battery is introduced by Rayovac.
During WWII World War II Rayovac establishes seven new plants, boosts employment by 1,000%, wins eight Army-Navy "E" awards for major contribution to victory.
Rayovac supplied the military with nearly 500,000,000 batteries.
Rayovac introduces the crown cell alkaline for hearing aids and launches the famous steel Sportsman flashlight.
The Rayovac hearing aid battery plant opens in Portage, WI.
Rayovac opens the Fennimore, WI plant.
Rayovac is awarded the patent for silver oxide button cells.
Rayovac becomes the first U.S. firm to introduce heavy duty all zinc chloride battery, with double the life of zinc carbon batteries then on the market.
Rayovac introduces the Air 2000 hearing aid button cell.
Rayovac introduced the Workhorse premium flashlight with its lifetime warranty.
Rayovac introduces a new computer clock battery to power the real-time clocks of personal computers.
The Heavy Duty and Industrial product lines are introduced by Rayovac.
A new Workhorse Fluorescent Lantern is introduced by Rayovac to provide the consumer more light features.
Rayovac introduces Renewal, a reusable, long-life alkaline battery.
Rayovac introduces a new “hands-free” flashlight called the swivel light.
The Rayovac Specialty Battery Line is introduced.
Rayovac introduces break-through 1-Hour Charger and high capacity Nickel-Metal Hydride rechargeable batteries.
Rayovac introduces new Maximum Plus Alkaline batteries with improved performance.
Rayovac acquires European-based battery maker VARTA’s consumer battery business.
Rayovac introduces new 15-Minute charger and rechargeable nickel metal hydride batteries, using I-C3 technology.
Rayovac acquires 85% share in Ningbo Baowang, a Chinese battery manufacturing facility.
Rayovac acquires Microlite S.A., a Brazilian battery company.
Rayovac acquires United Industries, a leading manufacturer and marketer of consumer products for lawn and garden care and household insect control as well as premium branded specialty pet supplies.
Rayovac announces development of revolutionary new Hybrid™ rechargeable technology. “The Best of Both World’s” battery is NiMH and holds a charge like Alkaline, unlike other rechargeable systems.
Rayovac becomes the official battery of Disney Parks.
Rayovac introduces the Ultra Pro line of alkaline batteries that continue to last as long as Duracell® Coppertop™ & Energizer® Max™.
Rayovac Hearing Aid Battery business launches Rayovac Mercury Free hearing aid batteries, continuing its commitment to the environment.