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2. Nine-volt battery - Wikipedia

   en.wikipedia.org/wiki/Nine-volt_battery

   The nine-volt battery, or 9-volt battery, is an electric battery that supplies a nominal voltage of 9 volts. Actual voltage measures 7.2 to 9.6 volts, depending on battery chemistry. Batteries of various sizes and capacities are manufactured; a very common size is known as PP3, introduced for early transistor radios. The PP3 has a rectangular prism shape with rounded edges and two polarized ...

3. AAAA battery - Wikipedia

   en.wikipedia.org/wiki/AAAA_battery

   This battery size is most often used in small devices such as laser pointers, LED penlights, powered computer styluses, glucose meters, and small headphone amplifiers, with Microsoft 's Surface Pen the most prominent product taking AAAA batteries.

4. Nickel–cadmium battery - Wikipedia

   en.wikipedia.org/wiki/Nickel–cadmium_battery

   Wet-cell nickel–cadmium batteries were invented in 1899. A Ni–Cd battery has a terminal voltage during discharge of around 1.2 volts which decreases little until nearly the end of discharge. The maximum electromotive force offered by a Ni–Cd cell is 1.3 V. Ni–Cd batteries are made in a wide range of sizes and capacities, from portable sealed types interchangeable with carbon–zinc dry ...

5. Burgess Battery Company - Wikipedia

   en.wikipedia.org/wiki/Burgess_Battery_Company

   The Burgess Battery Company (Burgess) was founded by Dr. Charles F. Burgess in Madison, Wisconsin and incorporated on March 1, 1917. The United States entered World War I a month later on April 6. During the war Burgess collaborated with the US Army Signal Corps to develop quality batteries for radio communication equipment.

6. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   This is a list of the sizes, shapes, and general characteristics of some common primary and secondary battery types in household, automotive and light industrial use.

7. A big CES 2023 trend: All battery power, everywhere, all the time

   techcrunch.com/2023/01/07/batteries-batteries...

   At CES, the company launched a battery-powered fridge with ice maker, a portable, an updated version of its battery-powered air conditioning unit and a number of other innovations.