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  2. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    Used in some lighted watches and some LED decorator lights (electronic tea candles). CR1220: 5012LC: 35–40: 0.1 (CR) 0.03 (BR) 12.5 × 2.0 Used in keychain LED flashlights, and in some digital cameras to keep the time and date function running even when the main battery is taken out of the camera. [146] [147] CR1225: 5020LC: 50: 0.2: 12.5 × 2.5

  3. Duracell - Wikipedia

    en.wikipedia.org/wiki/Duracell

    Duracell Inc. is an American manufacturer of alkaline batteries, specialty cells, and rechargeables; it is a wholly owned subsidiary of Berkshire Hathaway since 2016. The company has its origins in the 1920s, through the work of Samuel Ruben and Philip Mallory , and the formation of the P. R. Mallory Company .

  4. VRB-25 - Wikipedia

    en.wikipedia.org/wiki/VRB-25

    Since the life of an incandescent lamp decreases dramatically as the applied voltage increases, the lamp voltage is carefully maintained at 12.00V using pulse-width modulation. The lamps, standard marine signal lamps [ 2 ] which may be from 10 to 100 watts as required to produce the necessary range, typically have a life of 2,000 hours.

  5. D battery - Wikipedia

    en.wikipedia.org/wiki/D_battery

    A battery's capacity depends upon its cell chemistry and current draw. Duracell brand rates its alkaline D cell performance as approximately 20,000 mAh at 25 mA draw, but about 10,000 mAh at 500 mA draw. [5] This effect is generally less pronounced in cells with NiMH chemistry and hardly at all with NiCd. Many commonly available size D ...

  6. Button cell - Wikipedia

    en.wikipedia.org/wiki/Button_cell

    Button, coin, or watch cells. A button cell, watch battery, or coin battery is a small battery made of a single electrochemical cell and shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high – resembling a button.

  7. Light characteristic - Wikipedia

    en.wikipedia.org/wiki/Light_characteristic

    A Morse code light is light in which appearances of light of two clearly different durations (dots and dashes) are grouped to represent a character or characters in the Morse Code. For example, "Mo(A)" is a light in which in each period light is shown for a short period (dot) followed by a long period (dash), the Morse Code for "A".

  8. Tideland Signal - Wikipedia

    en.wikipedia.org/wiki/Tideland_Signal

    An ML-300 lantern in the Presque Isle Light. The Tideland ML-300 (ML for MaxLumina) is a multi-purpose marine lantern, with a focal length of 300 millimetres (12 in). It consists of a single piece injection molding acrylic 300mm Fresnel lens and a base assembly, where a flasher or lamp changer can be installed.

  9. Battery recycling - Wikipedia

    en.wikipedia.org/wiki/Battery_recycling

    Battery recycling is a recycling activity that aims to reduce the number of batteries being disposed as municipal solid waste.Batteries contain a number of heavy metals and toxic chemicals and disposing of them by the same process as regular household waste has raised concerns over soil contamination and water pollution. [1]

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