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  2. Power Wheels - Wikipedia

    en.wikipedia.org/wiki/Power_Wheels

    Fisher-Price. Country. USA. Availability. 1984–. Power Wheels is a brand of battery-powered ride-on toy cars for kids ages one to seven years old. Power Wheels ride-ons are built with kid-sized, realistic features – in some cases, real working features like FM radios, opening/closing doors and hoods, and both forward and reverse motion.

  3. History of the battery - Wikipedia

    en.wikipedia.org/wiki/History_of_the_battery

    History of the battery. A voltaic pile, the first chemical battery. Batteries provided the primary source of electricity before the development of electric generators and electrical grids around the end of the 19th century. Successive improvements in battery technology facilitated major electrical advances, from early scientific studies to the ...

  4. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    It was powered with dry piles, a high voltage battery with extremely long life but the disadvantage of its electrical properties varying according to the air temperature and humidity. He experimented with ways of regulating the electricity and his improved devices proved to be more reliable. [160]

  5. Operation (game) - Wikipedia

    en.wikipedia.org/wiki/Operation_(game)

    Operation is a battery-operated game of physical skill that tests players' hand-eye coordination and fine motor skills.The game's prototype was invented in 1964 by University of Illinois industrial-design student John Spinello, who sold his rights to renowned toy designer Marvin Glass for $500 and the promise of a job upon graduation, which was not fulfilled. [1]

  6. LeapFrog Epic - Wikipedia

    en.wikipedia.org/wiki/LeapFrog_Epic

    25.9 mm (1.02 in) (d) Mass. 585.13 g (20.640 oz) Website. LeapFrog Epic. The LeapFrog Epic (styled as LeapFrog epic) is an Android-based mini-tablet computer produced and marketed by LeapFrog Enterprises. Released in 2015, the Epic is LeapFrog's first device to run on Android; most of LeapFrog's mobile computing devices for children run on a ...

  7. These 10 Companies Make the Best Power Tools, Period

    www.aol.com/lifestyle/10-companies-best-power...

    Lab pick: In the competitive 20-volt cordless drill category, our experts tapped DeWalt's 20V MAX drill as the best overall cordless drill on the strength of the tool's comfortable grip ...

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