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2. TV Ears - Wikipedia

   en.wikipedia.org/wiki/Tv_ears

   TV Ears is an American, privately held audio technology company that specializes in voice clarifying television products for the hearing impaired. It was founded in April 1998 by George Dennis. [1] They are located in Spring Valley, California , where they house the North American distribution center, support, and sales teams, while employing ...

3. Metal–air electrochemical cell - Wikipedia

   en.wikipedia.org/wiki/Metal–air_electrochemical...

   A metal–air electrochemical cell is an electrochemical cell that uses an anode made from pure metal and an external cathode of ambient air, typically with an aqueous or aprotic electrolyte. [ 1][ 2] During discharging of a metal–air electrochemical cell, a reduction reaction occurs in the ambient air cathode while the metal anode is oxidized .

4. Nokia 2.3 - Wikipedia

   en.wikipedia.org/wiki/Nokia_2.3

   The Nokia 2.3, like x.2 series of Nokia phones, has a dedicated Google Assistant button on the left of the phone which can be pressed to quickly activate the Google Assistant or held and released for the Google Assistant to start and stop listening. [3] The phone can be bought in 3 colours, Cyan Green, Sand & Charcoal. [3]

5. Television set - Wikipedia

   en.wikipedia.org/wiki/Television_set

   Television set. A television set or television receiver (more commonly called TV, TV set, television, telly, or tele) is an electronic device for the purpose of viewing and hearing television broadcasts, or as a computer monitor. It combines a tuner, display, and loudspeakers. Introduced in the late 1920s in mechanical form, television sets ...

6. Lead-acid battery - Wikipedia

   en.wikipedia.org/wiki/Lead-acid_battery

   The lead-acid battery is a type of rechargeable battery first invented in 1859 by French physicist Gaston Planté. It is the first type of rechargeable battery ever created. Compared to modern rechargeable batteries, lead-acid batteries have relatively low energy density. Despite this, they are able to supply high surge currents.

7. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   3LR12 (4.5-volt), D, C, AA, AAA, AAAA (1.5-volt), A23 (12-volt), PP3 (9-volt), CR2032 (3-volt), and LR44 (1.5-volt) batteries. 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. The complete nomenclature for a battery specifies ...

8. Zinc–air battery - Wikipedia

   en.wikipedia.org/wiki/Zinc–air_battery

   A zinc–air battery is a metal–air electrochemical cell powered by the oxidation of zinc with oxygen from the air. During discharge, a mass of zinc particles forms a porous anode, which is saturated with an electrolyte. Oxygen from the air reacts at the cathode and forms hydroxyl ions which migrate into the zinc paste and form zincate ( Zn ...

9. Iron redox flow battery - Wikipedia

   en.wikipedia.org/wiki/Iron_redox_flow_battery

   VoltStorage GmbH is a German based company focussing on the European market. The goal is to develop cascadeable batteries up to 5 x 50 kWh with 9.4 MW or 234 MWh per acre with efficiencies of 70%, with a lifetime of > 20 years and > 10.000 cycles. [13] Sacramento Municipal Utility District installed an iron flow battery in September 2022 [18]